Subsidiary Guarantors - Condensed Consolidating Statement of Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Condensed Financial Statements, Captions [Line Items]
Net sales	$ 319,875	$ 324,575	$ 516,464	$ 533,559
Cost of sales	247,862	242,380	410,036	406,610
Gross profit	72,013	82,195	106,428	126,949
Selling, general and administrative expenses	60,266	62,803	119,262	119,638
Manufacturing restructuring costs	0	0	(331)	0
Income from operations	11,747	19,392	(12,503)	7,311
Interest expense, net	20,759	20,391	41,079	39,232
Foreign currency loss	278	178	616	431
Income (loss) before income taxes	(9,290)	(1,177)	(54,198)	(32,352)
Income tax expense (benefit)	1,318	1,962	2,759	2,131
(Loss) income before equity income (loss) from subsidiaries	(10,608)	(3,139)	(56,957)	(34,483)
Equity income (loss) from subsidiaries	0	0	0	0
Net income (loss)	(10,608)	(3,139)	(56,957)	(34,483)
Other comprehensive income (loss):
Pension and other postretirement benefit adjustments, net of tax	5	152	8	305
Foreign currency translation adjustments, net of tax	10,211	(9,729)	1,157	(15,272)
Total comprehensive (loss) income	(392)	(12,716)	(55,792)	(49,450)
Company
Condensed Financial Statements, Captions [Line Items]
Net sales	251,215	248,981	408,154	410,744
Cost of sales	201,020	188,018	335,338	316,319
Gross profit	50,195	60,963	72,816	94,425
Selling, general and administrative expenses	48,100	49,868	96,230	94,272
Manufacturing restructuring costs			(331)
Income from operations	2,095	11,095	(23,083)	153
Interest expense, net	(20,292)	19,741	40,264	38,194
Foreign currency loss	0	0	0	0
Income (loss) before income taxes	(18,197)	(8,646)	(63,347)	(38,041)
Income tax expense (benefit)	(378)	469	1,256	1,415
(Loss) income before equity income (loss) from subsidiaries	(17,819)	(9,115)	(64,603)	(39,456)
Equity income (loss) from subsidiaries	7,211	5,976	7,646	4,973
Net income (loss)	(10,608)	(3,139)	(56,957)	(34,483)
Other comprehensive income (loss):
Pension and other postretirement benefit adjustments, net of tax	(5)	152	8	305
Foreign currency translation adjustments, net of tax	10,211	(9,729)	1,157	(15,272)
Total comprehensive (loss) income	(392)	(12,716)	(55,792)	(49,450)
Co-Issuer
Condensed Financial Statements, Captions [Line Items]
Net sales	0	0	0	0
Cost of sales	0	0	0	0
Gross profit	0	0	0	0
Selling, general and administrative expenses	0	0	0	0
Manufacturing restructuring costs			0
Income from operations	0	0	0	0
Interest expense, net	0	0	0	0
Foreign currency loss	0	0	0	0
Income (loss) before income taxes	0	0	0	0
Income tax expense (benefit)	0	0	0	0
(Loss) income before equity income (loss) from subsidiaries	0	0	0	0
Equity income (loss) from subsidiaries	0	0	0	0
Net income (loss)	0	0	0	0
Other comprehensive income (loss):
Pension and other postretirement benefit adjustments, net of tax	0	0	0	0
Foreign currency translation adjustments, net of tax	0	0	0	0
Total comprehensive (loss) income	0	0	0	0
Subsidiary Guarantors
Condensed Financial Statements, Captions [Line Items]
Net sales	45,778	49,065	76,440	84,895
Cost of sales	42,595	45,957	71,545	79,284
Gross profit	3,183	3,108	4,895	5,611
Selling, general and administrative expenses	1,104	1,369	2,046	2,804
Manufacturing restructuring costs			0
Income from operations	2,079	1,739	2,849	2,807
Interest expense, net	0	0	1	0
Foreign currency loss	0	0	0	0
Income (loss) before income taxes	2,079	1,739	2,848	2,807
Income tax expense (benefit)	(36)	(42)	(63)	(76)
(Loss) income before equity income (loss) from subsidiaries	2,115	1,781	2,911	2,883
Equity income (loss) from subsidiaries	5,096	4,195	4,735	2,090
Net income (loss)	7,211	5,976	7,646	4,973
Other comprehensive income (loss):
Pension and other postretirement benefit adjustments, net of tax	(13)	108	25	218
Foreign currency translation adjustments, net of tax	10,211	(9,729)	1,157	(15,272)
Total comprehensive (loss) income	17,435	(3,645)	8,828	(10,081)
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net sales	79,125	78,405	123,819	124,605
Cost of sales	60,490	60,281	95,102	97,692
Gross profit	18,635	18,124	28,717	26,913
Selling, general and administrative expenses	11,062	11,566	20,986	22,562
Manufacturing restructuring costs			0
Income from operations	7,573	6,558	7,731	4,351
Interest expense, net	(467)	650	814	1,038
Foreign currency loss	(278)	178	616	431
Income (loss) before income taxes	6,828	5,730	6,301	2,882
Income tax expense (benefit)	1,732	1,535	1,566	792
(Loss) income before equity income (loss) from subsidiaries	5,096	4,195	4,735	2,090
Equity income (loss) from subsidiaries	0	0	0	0
Net income (loss)	5,096	4,195	4,735	2,090
Other comprehensive income (loss):
Pension and other postretirement benefit adjustments, net of tax	(14)	100	28	202
Foreign currency translation adjustments, net of tax	10,211	(9,729)	1,157	(15,272)
Total comprehensive (loss) income	15,321	(5,434)	5,920	(12,980)
Reclassification/Eliminations
Condensed Financial Statements, Captions [Line Items]
Net sales	(56,243)	(51,876)	(91,949)	(86,685)
Cost of sales	(56,243)	(51,876)	(91,949)	(86,685)
Gross profit	0	0	0	0
Selling, general and administrative expenses	0	0	0	0
Manufacturing restructuring costs			0
Income from operations	0	0	0	0
Interest expense, net	0	0	0	0
Foreign currency loss	0	0	0	0
Income (loss) before income taxes	0	0	0	0
Income tax expense (benefit)	0	0	0	0
(Loss) income before equity income (loss) from subsidiaries	0	0	0	0
Equity income (loss) from subsidiaries	(12,307)	(10,171)	(12,381)	(7,063)
Net income (loss)	(12,307)	(10,171)	(12,381)	(7,063)
Other comprehensive income (loss):
Pension and other postretirement benefit adjustments, net of tax	27	(208)	(53)	(420)
Foreign currency translation adjustments, net of tax	(20,422)	19,458	(2,314)	30,544
Total comprehensive (loss) income	$ (32,756)	$ 9,079	$ (14,748)	$ 23,061