CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Revenue	$ 500,020	$ 507,687	$ 1,002,180	$ 961,145
Cost of goods and services	385,645	397,700	769,816	745,655
Gross profit	114,375	109,987	232,364	215,490
Selling, general and administrative expenses	93,566	89,622	187,462	177,302
Restructuring and other related charges	0	692	0	1,534
Total operating expenses	93,566	90,314	187,462	178,836
Income from operations	20,809	19,673	44,902	36,654
Other income (expense)
Interest expense	(12,012)	(12,389)	(23,766)	(25,523)
Interest income	155	28	272	61
Loss from debt extinguishment, net	0	(38,890)	0	(38,890)
Other, net	(757)	783	(1,208)	1,689
Total other expense, net	(12,614)	(50,468)	(24,702)	(62,663)
Income (loss) before taxes	8,195	(30,795)	20,200	(26,009)
Provision (benefit) for income taxes	3,073	(4,970)	7,607	(3,420)
Net income (loss)	5,122	(25,825)	12,593	(22,589)
Basic income (loss) per common share (in Dollars per share)	$ 0.11	$ (0.53)	$ 0.27	$ (0.44)
Weighted-average shares outstanding	45,349	48,990	45,829	50,872
Diluted income (loss) per common share (in Dollars per share)	$ 0.11	$ (0.53)	$ 0.26	$ (0.44)
Weighted-average shares outstanding	47,669	48,990	47,682	50,872
Dividends paid per common share (in Dollars per share)	$ 0.04	$ 0.03	$ 0.08	$ 0.06
Net income (loss)	5,122	(25,825)	12,593	(22,589)
Other comprehensive income (loss), net of taxes:
Foreign currency translation adjustments	(30,384)	1,224	(45,884)	(1,913)
Pension and other post retirement plans	353	1,099	706	1,415
Loss on cash flow hedge	(80)	0	(154)	0
Gain (loss) on available-for-sale securities	92	0	(870)	0
Total other comprehensive income (loss), net of taxes	(30,019)	2,323	(46,202)	(498)
Comprehensive income (loss), net	$ (24,897)	$ (23,502)	$ (33,609)	$ (23,087)