CONSOLIDATING GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION (Details) - Summary of Condensed Consolidating Statements of Operations and Comprehensive Income (Loss) (USD $)	3 Months Ended			6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2015	Mar. 31, 2014
Condensed Income Statements, Captions [Line Items]
Revenue	$ 500,020,000	$ 507,687,000		$ 1,002,180,000	$ 961,145,000
Cost of goods and services	385,645,000	397,700,000		769,816,000	745,655,000
Gross profit	114,375,000	109,987,000		232,364,000	215,490,000
Selling, general and administrative expenses	93,566,000	89,622,000		187,462,000	177,302,000
Restructuring and other related charges	0	692,000	842,000	0	1,534,000
Total operating expenses	93,566,000	90,314,000		187,462,000	178,836,000
Income from operations	20,809,000	19,673,000		44,902,000	36,654,000
Other income (expense)
Interest income (expense), net	(11,857,000)	(12,361,000)		(23,494,000)	(25,462,000)
Loss from debt extinguishment, net	0	(38,890,000)		0	(38,890,000)
Other, net	(757,000)	783,000		(1,208,000)	1,689,000
Total other expense, net	(12,614,000)	(50,468,000)		(24,702,000)	(62,663,000)
Income (loss) before taxes	8,195,000	(30,795,000)		20,200,000	(26,009,000)
Provision (benefit) for income taxes	3,073,000	(4,970,000)		7,607,000	(3,420,000)
Income (loss) before equity in net income of subsidiaries	5,122,000	(25,825,000)		12,593,000	(22,589,000)
Equity in net income (loss) of subsidiaries	0	0		0	0
Net income (loss)	5,122,000	(25,825,000)		12,593,000	(22,589,000)
Foreign currency translation adjustments	(30,384,000)	1,224,000		(45,884,000)	(1,913,000)
Other comprehensive income (loss), net of taxes	(30,019,000)	2,323,000		(46,202,000)	(498,000)
Comprehensive income (loss), net	(24,897,000)	(23,502,000)		(33,609,000)	(23,087,000)
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	5,301,000	7,161,000		10,821,000	13,491,000
Restructuring and other related charges		0			0
Total operating expenses	5,301,000	7,161,000		10,821,000	13,491,000
Income from operations	(5,301,000)	(7,161,000)		(10,821,000)	(13,491,000)
Other income (expense)
Interest income (expense), net	(2,224,000)	(2,885,000)		(4,128,000)	(6,490,000)
Loss from debt extinguishment, net		(38,890,000)			(38,890,000)
Other, net	521,000	15,000		567,000	127,000
Total other expense, net	(1,703,000)	(41,760,000)		(3,561,000)	(45,253,000)
Income (loss) before taxes	(7,004,000)	(48,921,000)		(14,382,000)	(58,744,000)
Provision (benefit) for income taxes	(1,984,000)	(11,045,000)		(5,465,000)	(15,579,000)
Income (loss) before equity in net income of subsidiaries	(5,020,000)	(37,876,000)		(8,917,000)	(43,165,000)
Equity in net income (loss) of subsidiaries	10,142,000	12,051,000		21,510,000	20,576,000
Net income (loss)	5,122,000	(25,825,000)		12,593,000	(22,589,000)
Other comprehensive income (loss), net of taxes	(30,019,000)	2,323,000		(46,202,000)	(498,000)
Comprehensive income (loss), net	(24,897,000)	(23,502,000)		(33,609,000)	(23,087,000)
Guarantor Companies [Member]
Condensed Income Statements, Captions [Line Items]
Revenue	400,042,000	396,505,000		778,156,000	741,149,000
Cost of goods and services	306,625,000	305,191,000		595,995,000	565,174,000
Gross profit	93,417,000	91,314,000		182,161,000	175,975,000
Selling, general and administrative expenses	71,970,000	68,234,000		141,527,000	136,615,000
Restructuring and other related charges		728,000			1,492,000
Total operating expenses	71,970,000	68,962,000		141,527,000	138,107,000
Income from operations	21,447,000	22,352,000		40,634,000	37,868,000
Other income (expense)
Interest income (expense), net	(7,698,000)	(7,329,000)		(15,125,000)	(14,579,000)
Loss from debt extinguishment, net		0			0
Other, net	1,615,000	1,014,000		2,910,000	3,072,000
Total other expense, net	(6,083,000)	(6,315,000)		(12,215,000)	(11,507,000)
Income (loss) before taxes	15,364,000	16,037,000		28,419,000	26,361,000
Provision (benefit) for income taxes	3,062,000	6,053,000		10,799,000	11,692,000
Income (loss) before equity in net income of subsidiaries	12,302,000	9,984,000		17,620,000	14,669,000
Equity in net income (loss) of subsidiaries	(735,000)	1,982,000		5,301,000	5,748,000
Net income (loss)	11,567,000	11,966,000		22,921,000	20,417,000
Other comprehensive income (loss), net of taxes	(12,075,000)	80,000		(16,655,000)	1,869,000
Comprehensive income (loss), net	(508,000)	12,046,000		6,266,000	22,286,000
Non-Guarantor Companies [Member]
Condensed Income Statements, Captions [Line Items]
Revenue	113,206,000	127,782,000		252,087,000	249,534,000
Cost of goods and services	91,320,000	107,555,000		199,594,000	206,949,000
Gross profit	21,886,000	20,227,000		52,493,000	42,585,000
Selling, general and administrative expenses	17,349,000	15,833,000		37,448,000	30,408,000
Restructuring and other related charges		(36,000)			42,000
Total operating expenses	17,349,000	15,797,000		37,448,000	30,450,000
Income from operations	4,537,000	4,430,000		15,045,000	12,135,000
Other income (expense)
Interest income (expense), net	(1,935,000)	(2,147,000)		(4,241,000)	(4,393,000)
Loss from debt extinguishment, net		0			0
Other, net	(2,767,000)	(194,000)		(4,641,000)	(1,368,000)
Total other expense, net	(4,702,000)	(2,341,000)		(8,882,000)	(5,761,000)
Income (loss) before taxes	(165,000)	2,089,000		6,163,000	6,374,000
Provision (benefit) for income taxes	1,995,000	22,000		2,273,000	467,000
Income (loss) before equity in net income of subsidiaries	(2,160,000)	2,067,000		3,890,000	5,907,000
Equity in net income (loss) of subsidiaries	12,302,000	9,984,000		17,620,000	14,669,000
Net income (loss)	10,142,000	12,051,000		21,510,000	20,576,000
Other comprehensive income (loss), net of taxes	(18,389,000)	2,073,000		(29,220,000)	(2,707,000)
Comprehensive income (loss), net	(8,247,000)	14,124,000		(7,710,000)	17,869,000
Elimination [Member]
Condensed Income Statements, Captions [Line Items]
Revenue	(13,228,000)	(16,600,000)		(28,063,000)	(29,538,000)
Cost of goods and services	(12,300,000)	(15,046,000)		(25,773,000)	(26,468,000)
Gross profit	(928,000)	(1,554,000)		(2,290,000)	(3,070,000)
Selling, general and administrative expenses	(1,054,000)	(1,606,000)		(2,334,000)	(3,212,000)
Restructuring and other related charges		0			0
Total operating expenses	(1,054,000)	(1,606,000)		(2,334,000)	(3,212,000)
Income from operations	126,000	52,000		44,000	142,000
Other income (expense)
Interest income (expense), net	0	0		0	0
Loss from debt extinguishment, net		0			0
Other, net	(126,000)	(52,000)		(44,000)	(142,000)
Total other expense, net	(126,000)	(52,000)		(44,000)	(142,000)
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	(21,709,000)	(24,017,000)		(44,431,000)	(40,993,000)
Net income (loss)	(21,709,000)	(24,017,000)		(44,431,000)	(40,993,000)
Other comprehensive income (loss), net of taxes	30,464,000	(2,153,000)		45,875,000	838,000
Comprehensive income (loss), net	$ 8,755,000	$ (26,170,000)		$ 1,444,000	$ (40,155,000)