Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income - Reclassifications out of AOCI (Details)

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Accumulated Other Comprehensive Income - Reclassifications out of AOCI (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Derivatives        
Interest expense $ 9,262 $ 6,614 $ 17,063 $ 12,762
Income before income tax 20,284 20,841 30,215 33,538
Income taxes 2,212 5,973 (23,015) 8,462
Net income attributable to Matthews shareholders 18,182 14,920 53,362 25,242
Prior service (cost) credit        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income before income tax 84 94 168 188
Actuarial losses        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income before income tax (1,752) (2,509) (3,504) (5,018)
Post-retirement benefit plans        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Income before income tax (1,668) (2,415) (3,336) (4,830)
Income taxes (646) (953) (1,296) (1,832)
Net income (1,022) (1,462) (2,040) (2,998)
Derivatives        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net income 133 306 171 799
Derivatives | Reclassification out of Accumulated Other Comprehensive Income        
Derivatives        
Income before income tax 202 503 265 1,310
Income taxes 69 197 94 511
Net income attributable to Matthews shareholders 133 306 171 799
Derivatives | Interest rate swap contracts | Reclassification out of Accumulated Other Comprehensive Income        
Derivatives        
Interest expense $ 202 $ 503 $ 265 $ 1,310