Annual report pursuant to Section 13 and 15(d)

SEGMENT INFORMATION - Information about the Company's Operations by Geographic Area (Details)

v3.10.0.1
SEGMENT INFORMATION - Information about the Company's Operations by Geographic Area (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Sales $ 407,444 $ 411,621 $ 414,061 $ 369,454 $ 396,064 $ 389,630 $ 380,916 $ 348,998 $ 1,602,580 $ 1,515,608 $ 1,480,464
Long-lived assets 1,645,579       1,557,709       1,645,579 1,557,709 1,464,822
North America                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Sales                 1,066,367 1,043,924 1,045,718
Long-lived assets 1,182,250       1,069,862       1,182,250 1,069,862 1,042,263
Central and South America                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Sales                 6,171 6,518 10,160
Long-lived assets 16,535       13,882       16,535 13,882 13,267
Europe                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Sales                 456,078 396,242 360,678
Long-lived assets 365,455       382,940       365,455 382,940 334,847
Australia                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Sales                 23,276 21,507 20,043
Long-lived assets 23,037       24,887       23,037 24,887 23,768
Asia                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Sales                 50,688 47,417 43,865
Long-lived assets $ 58,302       $ 66,138       $ 58,302 $ 66,138 $ 50,677