CONSOLIDATING GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION (Details) - Summary of Condensed Consolidating Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2015	Jun. 30, 2014
Condensed Income Statements, Captions [Line Items]
Revenue	$ 511,694	$ 505,039			$ 1,513,874	$ 1,466,184
Cost of goods and services	388,205	386,732			1,158,021	1,132,387
Gross profit	123,489	118,307			355,853	333,797
Selling, general and administrative expenses	95,575	96,135			283,037	273,437
Restructuring and other related charges	0	358	$ 692	$ 842	0	1,892
Total operating expenses	95,575	96,493			283,037	275,329
Income from operations	27,914	21,814			72,816	58,468
Other income (expense)
Interest income (expense), net	(12,150)	(11,541)			(35,644)	(37,003)
Loss from debt extinguishment, net	0	0			0	(38,890)
Other, net	929	2,621			(279)	4,310
Total other expense, net	(11,221)	(8,920)			(35,923)	(71,583)
Income (loss) before taxes	16,693	12,894			36,893	(13,115)
Provision (benefit) for income taxes	5,800	(1,570)			13,407	(4,990)
Income (loss) before equity in net income of subsidiaries	10,893	14,464			23,486	(8,125)
Equity in net income (loss) of subsidiaries	0	0			0	0
Net income (loss)	10,893	14,464			23,486	(8,125)
Foreign currency translation adjustments	4,801	2,809			(41,083)	896
Other comprehensive income (loss), net of taxes	5,363	3,126			(40,839)	2,628
Comprehensive income (loss), net	16,256	17,590			(17,353)	(5,497)
Parent Company [Member]
Condensed Income Statements, Captions [Line Items]
Revenue	0	0			0	0
Cost of goods and services	0	0			0	0
Gross profit	0	0			0	0
Selling, general and administrative expenses	5,978	7,034			16,799	20,525
Restructuring and other related charges		0				0
Total operating expenses	5,978	7,034			16,799	20,525
Income from operations	(5,978)	(7,034)			(16,799)	(20,525)
Other income (expense)
Interest income (expense), net	(2,402)	(1,750)			(6,530)	(8,240)
Loss from debt extinguishment, net		0				(38,890)
Other, net	(26)	1,436			541	1,563
Total other expense, net	(2,428)	(314)			(5,989)	(45,567)
Income (loss) before taxes	(8,406)	(7,348)			(22,788)	(66,092)
Provision (benefit) for income taxes	(3,194)	(9,322)			(8,659)	(24,901)
Income (loss) before equity in net income of subsidiaries	(5,212)	1,974			(14,129)	(41,191)
Equity in net income (loss) of subsidiaries	16,105	12,490			37,615	33,066
Net income (loss)	10,893	14,464			23,486	(8,125)
Other comprehensive income (loss), net of taxes	5,363	3,126			(40,839)	2,628
Comprehensive income (loss), net	16,256	17,590			(17,353)	(5,497)
Guarantor Companies [Member]
Condensed Income Statements, Captions [Line Items]
Revenue	416,433	392,361			1,194,589	1,133,510
Cost of goods and services	310,578	295,148			906,573	860,322
Gross profit	105,855	97,213			288,016	273,188
Selling, general and administrative expenses	73,190	71,110			214,717	207,725
Restructuring and other related charges		349				1,841
Total operating expenses	73,190	71,459			214,717	209,566
Income from operations	32,665	25,754			73,299	63,622
Other income (expense)
Interest income (expense), net	(7,770)	(7,367)			(22,895)	(21,946)
Loss from debt extinguishment, net		0				0
Other, net	2,075	2,497			4,985	5,569
Total other expense, net	(5,695)	(4,870)			(17,910)	(16,377)
Income (loss) before taxes	26,970	20,884			55,389	47,245
Provision (benefit) for income taxes	9,726	7,322			20,525	19,014
Income (loss) before equity in net income of subsidiaries	17,244	13,562			34,864	28,231
Equity in net income (loss) of subsidiaries	(1,206)	(1,161)			4,095	4,587
Net income (loss)	16,038	12,401			38,959	32,818
Other comprehensive income (loss), net of taxes	2,077	(592)			(14,578)	1,277
Comprehensive income (loss), net	18,115	11,809			24,381	34,095
Non-Guarantor Companies [Member]
Condensed Income Statements, Captions [Line Items]
Revenue	110,204	126,343			362,291	375,877
Cost of goods and services	85,841	103,938			285,435	310,887
Gross profit	24,363	22,405			76,856	64,990
Selling, general and administrative expenses	24,286	19,617			61,734	50,025
Restructuring and other related charges		9				51
Total operating expenses	24,286	19,626			61,734	50,076
Income from operations	77	2,779			15,122	14,914
Other income (expense)
Interest income (expense), net	(1,978)	(2,424)			(6,219)	(6,817)
Loss from debt extinguishment, net		0				0
Other, net	30	(997)			(4,611)	(2,365)
Total other expense, net	(1,948)	(3,421)			(10,830)	(9,182)
Income (loss) before taxes	(1,871)	(642)			4,292	5,732
Provision (benefit) for income taxes	(732)	430			1,541	897
Income (loss) before equity in net income of subsidiaries	(1,139)	(1,072)			2,751	4,835
Equity in net income (loss) of subsidiaries	17,244	13,562			34,864	28,231
Net income (loss)	16,105	12,490			37,615	33,066
Other comprehensive income (loss), net of taxes	3,258	3,547			(25,962)	840
Comprehensive income (loss), net	19,363	16,037			11,653	33,906
Elimination [Member]
Condensed Income Statements, Captions [Line Items]
Revenue	(14,943)	(13,665)			(43,006)	(43,203)
Cost of goods and services	(8,214)	(12,354)			(33,987)	(38,822)
Gross profit	(6,729)	(1,311)			(9,019)	(4,381)
Selling, general and administrative expenses	(7,879)	(1,626)			(10,213)	(4,838)
Restructuring and other related charges		0				0
Total operating expenses	(7,879)	(1,626)			(10,213)	(4,838)
Income from operations	1,150	315			1,194	457
Other income (expense)
Interest income (expense), net	0	0			0	0
Loss from debt extinguishment, net		0				0
Other, net	(1,150)	(315)			(1,194)	(457)
Total other expense, net	(1,150)	(315)			(1,194)	(457)
Income (loss) before taxes	0	0			0	0
Provision (benefit) for income taxes	0	0			0	0
Income (loss) before equity in net income of subsidiaries	0	0			0	0
Equity in net income (loss) of subsidiaries	(32,143)	(24,891)			(76,574)	(65,884)
Net income (loss)	(32,143)	(24,891)			(76,574)	(65,884)
Other comprehensive income (loss), net of taxes	(5,335)	(2,955)			40,540	(2,117)
Comprehensive income (loss), net	$ (37,478)	$ (27,846)			$ (36,034)	$ (68,001)