| 
           SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified 
         | 
        3 Months Ended | 
        12 Months Ended | 
      
      
        | 
           Sep. 30, 2012 
         | 
        
           Jun. 30, 2012 
         | 
        
           Mar. 31, 2012 
         | 
        
           Dec. 31, 2011 
         | 
        
           Sep. 30, 2011 
         | 
        
           Jun. 30, 2011 
         | 
        
           Mar. 31, 2011 
         | 
        
           Dec. 31, 2010 
         | 
        
           Sep. 30, 2012 
         | 
        
           Sep. 30, 2011 
         | 
        
           Sep. 30, 2010 
         | 
      
      
        | SEGMENT INFORMATION [Abstract] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Number of principal businesses | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        2
 | 
         
 | 
         
 | 
      
      
        | Number of operating segments | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        3
 | 
         
 | 
         
 | 
      
      
        | Segment Reporting Information [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
        $ 230,081
 | 
        $ 227,478
 | 
        $ 225,545
 | 
        $ 217,213
 | 
        $ 239,815
 | 
        $ 231,511
 | 
        $ 220,151
 | 
        $ 207,344
 | 
        $ 900,317
 | 
        $ 898,821
 | 
        $ 821,829
 | 
      
      
        | Intersegment sales | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        1,052
 | 
        591
 | 
        638
 | 
      
      
        | Depreciation and amortization | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        28,821
 | 
        27,661
 | 
        27,322
 | 
      
      
        | Operating profit | 
        21,852
 | 
        27,513
 | 
        25,287
 | 
        18,925
 | 
        32,984
 | 
        35,081
 | 
        28,485
 | 
        21,966
 | 
        93,577
 | 
        118,516
 | 
        116,581
 | 
      
      
        | Total assets | 
        1,128,042
 | 
         
 | 
         
 | 
         
 | 
        1,097,455
 | 
         
 | 
         
 | 
         
 | 
        1,128,042
 | 
        1,097,455
 | 
        993,825
 | 
      
      
        | Capital expenditures | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        33,236
 | 
        22,440
 | 
        21,437
 | 
      
      
        | Revenues from External Customers and Long-Lived Assets [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
        230,081
 | 
        227,478
 | 
        225,545
 | 
        217,213
 | 
        239,815
 | 
        231,511
 | 
        220,151
 | 
        207,344
 | 
        900,317
 | 
        898,821
 | 
        821,829
 | 
      
      
        | Long-lived assets | 
        679,245
 | 
         
 | 
         
 | 
         
 | 
        662,332
 | 
         
 | 
         
 | 
         
 | 
        679,245
 | 
        662,332
 | 
        592,872
 | 
      
      
        | 
           United States [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Segment Reporting Information [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        569,435
 | 
        559,362
 | 
        520,083
 | 
      
      
        | Revenues from External Customers and Long-Lived Assets [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        569,435
 | 
        559,362
 | 
        520,083
 | 
      
      
        | Long-lived assets | 
        395,565
 | 
         
 | 
         
 | 
         
 | 
        380,059
 | 
         
 | 
         
 | 
         
 | 
        395,565
 | 
        380,059
 | 
        334,471
 | 
      
      
        | 
           Mexico [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Segment Reporting Information [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        0
 | 
        0
 | 
        0
 | 
      
      
        | Revenues from External Customers and Long-Lived Assets [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        0
 | 
        0
 | 
        0
 | 
      
      
        | Long-lived assets | 
        4,743
 | 
         
 | 
         
 | 
         
 | 
        5,726
 | 
         
 | 
         
 | 
         
 | 
        4,743
 | 
        5,726
 | 
        6,367
 | 
      
      
        | 
           Canada [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Segment Reporting Information [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        11,967
 | 
        13,086
 | 
        14,000
 | 
      
      
        | Revenues from External Customers and Long-Lived Assets [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        11,967
 | 
        13,086
 | 
        14,000
 | 
      
      
        | Long-lived assets | 
        507
 | 
         
 | 
         
 | 
         
 | 
        476
 | 
         
 | 
         
 | 
         
 | 
        507
 | 
        476
 | 
        484
 | 
      
      
        | 
           Europe [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Segment Reporting Information [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        290,283
 | 
        298,773
 | 
        264,833
 | 
      
      
        | Revenues from External Customers and Long-Lived Assets [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        290,283
 | 
        298,773
 | 
        264,833
 | 
      
      
        | Long-lived assets | 
        260,809
 | 
         
 | 
         
 | 
         
 | 
        259,860
 | 
         
 | 
         
 | 
         
 | 
        260,809
 | 
        259,860
 | 
        235,902
 | 
      
      
        | 
           Australia [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Segment Reporting Information [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        13,778
 | 
        13,437
 | 
        11,160
 | 
      
      
        | Revenues from External Customers and Long-Lived Assets [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        13,778
 | 
        13,437
 | 
        11,160
 | 
      
      
        | Long-lived assets | 
        7,041
 | 
         
 | 
         
 | 
         
 | 
        6,752
 | 
         
 | 
         
 | 
         
 | 
        7,041
 | 
        6,752
 | 
        6,957
 | 
      
      
        | 
           Asia [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Segment Reporting Information [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        14,854
 | 
        14,163
 | 
        11,753
 | 
      
      
        | Revenues from External Customers and Long-Lived Assets [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        14,854
 | 
        14,163
 | 
        11,753
 | 
      
      
        | Long-lived assets | 
        10,580
 | 
         
 | 
         
 | 
         
 | 
        9,459
 | 
         
 | 
         
 | 
         
 | 
        10,580
 | 
        9,459
 | 
        8,691
 | 
      
      
        | 
           Cemetery Products [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Segment Reporting Information [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        215,943
 | 
        224,773
 | 
        224,247
 | 
      
      
        | Intersegment sales | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        262
 | 
        251
 | 
        272
 | 
      
      
        | Depreciation and amortization | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        3,255
 | 
        2,955
 | 
        2,442
 | 
      
      
        | Operating profit | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        33,195
 | 
        52,474
 | 
        56,167
 | 
      
      
        | Total assets | 
        211,205
 | 
         
 | 
         
 | 
         
 | 
        197,127
 | 
         
 | 
         
 | 
         
 | 
        211,205
 | 
        197,127
 | 
        194,110
 | 
      
      
        | Capital expenditures | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        3,811
 | 
        1,618
 | 
        6,107
 | 
      
      
        | Revenues from External Customers and Long-Lived Assets [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        215,943
 | 
        224,773
 | 
        224,247
 | 
      
      
        | 
           Funeral Home Products [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Segment Reporting Information [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        230,943
 | 
        243,291
 | 
        216,849
 | 
      
      
        | Intersegment sales | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        4
 | 
        0
 | 
        0
 | 
      
      
        | Depreciation and amortization | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        6,416
 | 
        6,371
 | 
        6,672
 | 
      
      
        | Operating profit | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        26,525
 | 
        29,039
 | 
        27,506
 | 
      
      
        | Total assets | 
        299,248
 | 
         
 | 
         
 | 
         
 | 
        311,841
 | 
         
 | 
         
 | 
         
 | 
        299,248
 | 
        311,841
 | 
        291,216
 | 
      
      
        | Capital expenditures | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        2,540
 | 
        3,850
 | 
        1,129
 | 
      
      
        | Revenues from External Customers and Long-Lived Assets [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        230,943
 | 
        243,291
 | 
        216,849
 | 
      
      
        | 
           Cremation [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Segment Reporting Information [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        45,981
 | 
        39,278
 | 
        32,786
 | 
      
      
        | Intersegment sales | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        60
 | 
        52
 | 
        68
 | 
      
      
        | Depreciation and amortization | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        396
 | 
        244
 | 
        197
 | 
      
      
        | Operating profit | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        3,869
 | 
        3,479
 | 
        3,646
 | 
      
      
        | Total assets | 
        41,099
 | 
         
 | 
         
 | 
         
 | 
        35,018
 | 
         
 | 
         
 | 
         
 | 
        41,099
 | 
        35,018
 | 
        28,223
 | 
      
      
        | Capital expenditures | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        396
 | 
        501
 | 
        241
 | 
      
      
        | Revenues from External Customers and Long-Lived Assets [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        45,981
 | 
        39,278
 | 
        32,786
 | 
      
      
        | 
           Graphics Imaging [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Segment Reporting Information [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        259,865
 | 
        268,975
 | 
        239,957
 | 
      
      
        | Intersegment sales | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        2
 | 
        177
 | 
        1
 | 
      
      
        | Depreciation and amortization | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        14,175
 | 
        13,580
 | 
        13,234
 | 
      
      
        | Operating profit | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        14,843
 | 
        22,427
 | 
        21,077
 | 
      
      
        | Total assets | 
        356,458
 | 
         
 | 
         
 | 
         
 | 
        351,595
 | 
         
 | 
         
 | 
         
 | 
        356,458
 | 
        351,595
 | 
        319,480
 | 
      
      
        | Capital expenditures | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        18,693
 | 
        10,820
 | 
        8,058
 | 
      
      
        | Revenues from External Customers and Long-Lived Assets [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        259,865
 | 
        268,975
 | 
        239,957
 | 
      
      
        | 
           Marking and Fulfillment Systems [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Segment Reporting Information [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        74,621
 | 
        61,938
 | 
        51,069
 | 
      
      
        | Intersegment sales | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        22
 | 
        21
 | 
        16
 | 
      
      
        | Depreciation and amortization | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        1,048
 | 
        530
 | 
        526
 | 
      
      
        | Operating profit | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        10,061
 | 
        7,819
 | 
        5,817
 | 
      
      
        | Total assets | 
        75,217
 | 
         
 | 
         
 | 
         
 | 
        67,193
 | 
         
 | 
         
 | 
         
 | 
        75,217
 | 
        67,193
 | 
        36,740
 | 
      
      
        | Capital expenditures | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        2,513
 | 
        295
 | 
        450
 | 
      
      
        | Revenues from External Customers and Long-Lived Assets [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        74,621
 | 
        61,938
 | 
        51,069
 | 
      
      
        | 
           Merchandising Solutions [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Segment Reporting Information [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        72,964
 | 
        60,566
 | 
        56,921
 | 
      
      
        | Intersegment sales | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        702
 | 
        90
 | 
        281
 | 
      
      
        | Depreciation and amortization | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        2,330
 | 
        1,949
 | 
        1,850
 | 
      
      
        | Operating profit | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        5,084
 | 
        3,278
 | 
        2,368
 | 
      
      
        | Total assets | 
        66,170
 | 
         
 | 
         
 | 
         
 | 
        60,491
 | 
         
 | 
         
 | 
         
 | 
        66,170
 | 
        60,491
 | 
        54,876
 | 
      
      
        | Capital expenditures | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        1,496
 | 
        3,165
 | 
        1,028
 | 
      
      
        | Revenues from External Customers and Long-Lived Assets [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        72,964
 | 
        60,566
 | 
        56,921
 | 
      
      
        | 
           Other [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Segment Reporting Information [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        0
 | 
        0
 | 
        0
 | 
      
      
        | Intersegment sales | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        0
 | 
        0
 | 
        0
 | 
      
      
        | Depreciation and amortization | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        1,201
 | 
        2,032
 | 
        2,401
 | 
      
      
        | Operating profit | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        0
 | 
        0
 | 
        0
 | 
      
      
        | Total assets | 
        78,645
 | 
         
 | 
         
 | 
         
 | 
        74,190
 | 
         
 | 
         
 | 
         
 | 
        78,645
 | 
        74,190
 | 
        69,180
 | 
      
      
        | Capital expenditures | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        3,787
 | 
        2,191
 | 
        4,424
 | 
      
      
        | Revenues from External Customers and Long-Lived Assets [Line Items] | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Sales to external customers | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
         
 | 
        $ 0
 | 
        $ 0
 | 
        $ 0
 |