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)