CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Revenue	$ 500,107	$ 500,020	$ 994,256	$ 1,002,180
Cost of goods and services	385,950	385,645	763,994	769,816
Gross profit	114,157	114,375	230,262	232,364
Selling, general and administrative expenses	91,586	93,566	182,885	187,462
Total operating expenses	91,586		182,885	187,462
Income from operations	22,571	20,809	47,377	44,902
Other income (expense)
Interest expense	(12,392)	(12,012)	(24,415)	(23,766)
Interest income	44	155	55	272
Loss from debt extinguishment, net		0		0
Other, net	(385)	(757)	170	(1,208)
Total other expense, net	(12,733)	(12,614)	(24,190)	(24,702)
Income before taxes	9,838	8,195	23,187	20,200
Provision for income taxes	3,743	3,073	8,496	7,607
Net income	$ 6,095	$ 5,122	$ 14,691	$ 12,593
Basic income (loss) per common share (in Dollars per share)	$ 0.15	$ 0.11	$ 0.35	$ 0.27
Weighted-average shares outstanding	41,426	45,349	41,697	45,829
Diluted income (loss) per common share (in Dollars per share)	$ 0.14	$ 0.11	$ 0.33	$ 0.26
Weighted-average shares outstanding	43,891	47,669	44,727	47,682
Dividends paid per common share (in Dollars per share)	$ 0.05	$ 0.04	$ 0.1	$ 0.08
Net income	$ 6,095	$ 5,122	$ 14,691	$ 12,593
Other comprehensive income (loss), net of taxes:
Foreign currency translation adjustments	13,683	(30,384)	10,334	(45,884)
Pension and other post retirement plans	386	353	772	706
Change in cash flow hedges	(1,649)	(80)	(2,664)	(154)
Change in available-for-sale securities	0	92	0	(870)
Total other comprehensive income (loss), net of taxes	12,420	(30,019)	8,442	(46,202)
Comprehensive income (loss), net	$ 18,515	$ (24,897)	$ 23,133	$ (33,609)