Subsidiary Guarantors Condensed Consolidating Statement of Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Condensed Financial Statements, Captions [Line Items]
Net sales	$ 332,482	$ 339,787	$ 892,552	$ 891,402
Cost of sales	244,743	258,083	665,755	686,780
Gross profit	87,739	81,704	226,797	204,622
Selling, general and administrative expenses	63,392	61,391	183,987	182,027
Restructuring costs	0	1,787	74	1,787
Other operating income	(158)	0	(890)	0
Income from operations	24,505	18,526	43,626	20,808
Interest expense, net	21,386	20,808	63,887	62,670
Foreign currency loss	305	806	470	1,923
Income (loss) before income taxes	2,814	(3,088)	(20,731)	(43,785)
Income tax expense	2,996	2,116	5,777	4,879
(Loss) income before equity income from subsidiaries	(182)	(5,204)	(26,508)	(48,664)
Equity income from subsidiaries	0	0	0	0
Net (loss) income	(182)	(5,204)	(26,508)	(48,664)
Other comprehensive income (loss); net of tax
Pension and other postretirement benefit adjustments	17	145	51	444
Foreign currency translation adjustments	(3,193)	(8,659)	9,254	(21,624)
Total comprehensive (loss) income	(3,358)	(13,718)	(17,203)	(69,844)
Company
Condensed Financial Statements, Captions [Line Items]
Net sales	263,614	267,732	720,182	709,642
Cost of sales	201,049	207,494	555,455	558,120
Gross profit	62,565	60,238	164,727	151,522
Selling, general and administrative expenses	50,324	49,447	144,983	146,298
Restructuring costs		1,787	74	1,787
Other operating income	(87)		(819)
Income from operations	12,328	9,004	20,489	3,437
Interest expense, net	21,218	19,008	63,401	57,072
Foreign currency loss	0	0	0	0
Income (loss) before income taxes	(8,890)	(10,004)	(42,912)	(53,635)
Income tax expense	532	20	1,217	925
(Loss) income before equity income from subsidiaries	(9,422)	(10,024)	(44,129)	(54,560)
Equity income from subsidiaries	9,242	4,820	17,621	5,896
Net (loss) income	(180)	(5,204)	(26,508)	(48,664)
Other comprehensive income (loss); net of tax
Pension and other postretirement benefit adjustments	12	145	51	444
Foreign currency translation adjustments	(3,193)	(8,659)	9,254	(21,624)
Total comprehensive (loss) income	(3,361)	(13,718)	(17,203)	(69,844)
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
Restructuring costs		0	0	0
Other operating income	0		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	0	0	0	0
(Loss) income before equity income from subsidiaries	0	0	0	0
Equity income from subsidiaries	0	0	0	0
Net (loss) income	0	0	0	0
Other comprehensive income (loss); net of tax
Pension and other postretirement benefit adjustments	0	0	0	0
Foreign currency translation adjustments	0	0	0	0
Total comprehensive (loss) income	0	0	0	0
Subsidiary Guarantors
Condensed Financial Statements, Captions [Line Items]
Net sales	40,011	44,388	114,128	117,128
Cost of sales	35,745	41,978	103,576	111,785
Gross profit	4,266	2,410	10,552	5,343
Selling, general and administrative expenses	1,569	1,759	5,477	5,129
Restructuring costs		0	0	0
Other operating income	0		0
Income from operations	2,697	651	5,075	214
Interest expense, net	0	1,616	0	4,939
Foreign currency loss	0	0	0	0
Income (loss) before income taxes	2,697	(965)	5,075	(4,725)
Income tax expense	0	13	(45)	90
(Loss) income before equity income from subsidiaries	2,697	(978)	5,120	(4,815)
Equity income from subsidiaries	6,544	5,798	12,501	10,711
Net (loss) income	9,241	4,820	17,621	5,896
Other comprehensive income (loss); net of tax
Pension and other postretirement benefit adjustments	(5)	55	(16)	173
Foreign currency translation adjustments	(3,193)	(8,659)	9,254	(21,624)
Total comprehensive (loss) income	6,043	(3,784)	26,859	(15,555)
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net sales	78,845	78,243	199,144	202,968
Cost of sales	57,937	59,187	147,626	155,211
Gross profit	20,908	19,056	51,518	47,757
Selling, general and administrative expenses	11,499	10,185	33,527	30,600
Restructuring costs		0	0	0
Other operating income	(71)		(71)
Income from operations	9,480	8,871	18,062	17,157
Interest expense, net	168	184	486	659
Foreign currency loss	305	806	470	1,923
Income (loss) before income taxes	9,007	7,881	17,106	14,575
Income tax expense	2,464	2,083	4,605	3,864
(Loss) income before equity income from subsidiaries	6,543	5,798	12,501	10,711
Equity income from subsidiaries	0	0	0	0
Net (loss) income	6,543	5,798	12,501	10,711
Other comprehensive income (loss); net of tax
Pension and other postretirement benefit adjustments	40	45	121	143
Foreign currency translation adjustments	(3,193)	(8,659)	9,254	(21,624)
Total comprehensive (loss) income	3,390	(2,816)	21,876	(10,770)
Reclassification/ Eliminations
Condensed Financial Statements, Captions [Line Items]
Net sales	(49,988)	(50,576)	(140,902)	(138,336)
Cost of sales	(49,988)	(50,576)	(140,902)	(138,336)
Gross profit	0	0	0	0
Selling, general and administrative expenses	0	0	0	0
Restructuring costs		0	0	0
Other operating income	0		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	0	0	0	0
(Loss) income before equity income from subsidiaries	0	0	0	0
Equity income from subsidiaries	(15,786)	(10,618)	(30,122)	(16,607)
Net (loss) income	(15,786)	(10,618)	(30,122)	(16,607)
Other comprehensive income (loss); net of tax
Pension and other postretirement benefit adjustments	(30)	(100)	(105)	(316)
Foreign currency translation adjustments	6,386	17,318	(18,508)	43,248
Total comprehensive (loss) income	$ (9,430)	$ 6,600	$ (48,735)	$ 26,325