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, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Condensed Income Statements, Captions [Line Items]
Revenue	$ 462,200	$ 511,694	$ 1,456,456	$ 1,513,874
Cost of goods and services	342,843	388,205	1,106,837	1,158,021
Gross profit	119,357	123,489	349,619	355,853
Selling, general and administrative expenses	88,880	95,575	271,765	283,037
Restructuring and other related charges	5,900	0	5,900	0
Total operating expenses	94,780	95,575	277,665	283,037
Income from operations	24,577	27,914	71,954	72,816
Other income (expense)
Interest income (expense), net	(12,960)	(12,150)	(37,320)	(35,644)
Loss from debt extinguishment, net				0
Other, net	142	929	312	(279)
Total other expense, net	(12,818)	(11,221)	(37,008)	(35,923)
Income before taxes	11,759	16,693	34,946	36,893
Provision (benefit) for income taxes	4,163	5,800	12,659	13,407
Income (loss) before equity in net income of subsidiaries	7,596	10,893	22,287	23,486
Equity in net income (loss) of subsidiaries	0	0	0	0
Net income	7,596	10,893	22,287	23,486
Foreign currency translation adjustments	796	4,801	11,130	(41,083)
Other comprehensive income (loss), net of taxes	2,469	5,363	10,911	(40,839)
Comprehensive income (loss), net	10,065	16,256	33,198	(17,353)
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	6,646	5,978	19,574	16,799
Restructuring and other related charges	0		0
Total operating expenses	6,646		19,574	16,799
Income from operations	(6,646)	(5,978)	(19,574)	(16,799)
Other income (expense)
Interest income (expense), net	(3,347)	(2,402)	(8,299)	(6,530)
Loss from debt extinguishment, net				0
Other, net	67	(26)	278	541
Total other expense, net	(3,280)	(2,428)	(8,021)	(5,989)
Income before taxes	(9,926)	(8,406)	(27,595)	(22,788)
Provision (benefit) for income taxes	12,946	(3,194)	3,499	(8,659)
Income (loss) before equity in net income of subsidiaries	(22,872)	(5,212)	(31,094)	(14,129)
Equity in net income (loss) of subsidiaries	30,468	16,105	53,381	37,615
Net income	7,596	10,893	22,287	23,486
Other comprehensive income (loss), net of taxes	2,469	5,363	10,911	(40,839)
Comprehensive income (loss), net	10,065	16,256	33,198	(17,353)
Guarantor Companies [Member]
Condensed Income Statements, Captions [Line Items]
Revenue	369,235	416,433	1,165,484	1,194,589
Cost of goods and services	267,804	310,578	879,391	906,573
Gross profit	101,431	105,855	286,093	288,016
Selling, general and administrative expenses	64,735	73,190	196,879	214,717
Restructuring and other related charges	1,299		1,299
Total operating expenses	66,034		198,178	214,717
Income from operations	35,397	32,665	87,915	73,299
Other income (expense)
Interest income (expense), net	(7,656)	(7,770)	(23,197)	(22,895)
Loss from debt extinguishment, net				0
Other, net	714	2,075	2,634	4,985
Total other expense, net	(6,942)	(5,695)	(20,563)	(17,910)
Income before taxes	28,455	26,970	67,352	55,389
Provision (benefit) for income taxes	7,167	9,726	23,996	20,525
Income (loss) before equity in net income of subsidiaries	21,288	17,244	43,356	34,864
Equity in net income (loss) of subsidiaries	7,454	(1,206)	8,275	4,095
Net income	28,742	16,038	51,631	38,959
Other comprehensive income (loss), net of taxes	(2,652)	2,077	(451)	(14,578)
Comprehensive income (loss), net	26,090	18,115	51,180	24,381
Non-Guarantor Companies [Member]
Condensed Income Statements, Captions [Line Items]
Revenue	100,420	110,204	313,766	362,291
Cost of goods and services	82,914	85,841	251,303	285,435
Gross profit	17,506	24,363	62,463	76,856
Selling, general and administrative expenses	17,591	24,286	55,589	61,734
Restructuring and other related charges	4,601		4,601
Total operating expenses	22,192		60,190	61,734
Income from operations	(4,686)	77	2,273	15,122
Other income (expense)
Interest income (expense), net	(1,957)	(1,978)	(5,824)	(6,219)
Loss from debt extinguishment, net				0
Other, net	(127)	30	(1,260)	(4,611)
Total other expense, net	(2,084)	(1,948)	(7,084)	(10,830)
Income before taxes	(6,770)	(1,871)	(4,811)	4,292
Provision (benefit) for income taxes	(15,950)	(732)	(14,836)	1,541
Income (loss) before equity in net income of subsidiaries	9,180	(1,139)	10,025	2,751
Equity in net income (loss) of subsidiaries	21,288	17,244	43,356	34,864
Net income	30,468	16,105	53,381	37,615
Other comprehensive income (loss), net of taxes	4,920	3,258	11,161	(25,962)
Comprehensive income (loss), net	35,388	19,363	64,542	11,653
Elimination [Member]
Condensed Income Statements, Captions [Line Items]
Revenue	(7,455)	(14,943)	(22,794)	(43,006)
Cost of goods and services	(7,875)	(8,214)	(23,857)	(33,987)
Gross profit	420	(6,729)	1,063	(9,019)
Selling, general and administrative expenses	(92)	(7,879)	(277)	(10,213)
Restructuring and other related charges	0		0
Total operating expenses	(92)		(277)	(10,213)
Income from operations	512	1,150	1,340	1,194
Other income (expense)
Interest income (expense), net	0	0	0	0
Loss from debt extinguishment, net				0
Other, net	(512)	(1,150)	(1,340)	(1,194)
Total other expense, net	(512)	(1,150)	(1,340)	(1,194)
Income 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	(59,210)	(32,143)	(105,012)	(76,574)
Net income	(59,210)	(32,143)	(105,012)	(76,574)
Other comprehensive income (loss), net of taxes	(2,268)	(5,335)	(10,710)	40,540
Comprehensive income (loss), net	$ (61,478)	$ (37,478)	$ (115,722)	$ (36,034)