Condensed Consolidating Financial Information (Condensed Consolidating Statement of Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Jan. 02, 2016	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 31, 2016	Jan. 02, 2016
Condensed Financial Statements, Captions [Line Items]
Net sales	$ 417,244	$ 405,955	$ 404,041	$ 432,761	$ 478,960	$ 419,783	$ 413,359	$ 429,677	$ 1,660,001	$ 1,741,779
Cost of sales									1,386,746	1,450,876
Selling, general and administrative expenses									179,525	186,749
Amortization of intangible assets									5,744	7,785
Restructuring and other charges									11,954	12,576
Operating income	16,575	20,873	21,570	17,014	24,822	19,516	21,655	17,800	76,032	83,793
Interest expense, net									85,753	100,805
Intercompany interest (income) expense									0	0
(Gain) loss on early extinguishment of debt, net									(82,481)	1,252
Other income, net									(2,344)	(3,196)
Income (loss) from continuing operations before income taxes									75,104	(15,068)
Income tax expense									4,258	4,393
(Loss) income from continuing operations before equity in income (loss) of subsidiaries									70,846	(19,461)
Equity in income (loss) of subsidiaries									0	0
Income (loss) from continuing operations	(1,779)	8,745	50,860	13,020	(4,365)	(3,562)	(3,355)	(8,179)	70,846	(19,461)
Loss from discontinued operations, net of taxes	1,538	686	(3,304)	(1,817)	(13,159)	319	950	500	(2,897)	(11,390)
Net income (loss)	$ (241)	$ 9,431	$ 47,556	$ 11,203	$ (17,524)	$ (3,243)	$ (2,405)	$ (7,679)	67,949	(30,851)
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries									0	0
Changes in pension and other employee benefit accounts, net of taxes									756	(3,438)
Currency translation adjustment, net									1,945	(4,295)
Total other comprehensive income (loss)									2,701	(7,733)
Comprehensive income (loss)									70,650	(38,584)
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales									0	0
Cost of sales									0	0
Selling, general and administrative expenses									0	0
Amortization of intangible assets									0	0
Restructuring and other charges									0	0
Operating income									0	0
Interest expense, net									0	0
Intercompany interest (income) expense									0	0
(Gain) loss on early extinguishment of debt, net									0	0
Other income, net									0	0
Income (loss) from continuing operations before income taxes									0	0
Income tax expense									0	0
(Loss) income from continuing operations before equity in income (loss) of subsidiaries									0	0
Equity in income (loss) of subsidiaries									67,949	(30,851)
Income (loss) from continuing operations									67,949	(30,851)
Loss from discontinued operations, net of taxes									0	0
Net income (loss)									67,949	(30,851)
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries									2,701	(7,733)
Changes in pension and other employee benefit accounts, net of taxes									0	0
Currency translation adjustment, net									0	0
Total other comprehensive income (loss)									2,701	(7,733)
Comprehensive income (loss)									70,650	(38,584)
Subsidiary Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales									882,195	898,529
Cost of sales									779,574	775,386
Selling, general and administrative expenses									110,870	119,149
Amortization of intangible assets									608	743
Restructuring and other charges									10,469	10,751
Operating income									(19,326)	(7,500)
Interest expense, net									85,537	100,592
Intercompany interest (income) expense									(1,008)	(998)
(Gain) loss on early extinguishment of debt, net									(82,481)	1,252
Other income, net									(490)	(2,658)
Income (loss) from continuing operations before income taxes									(20,884)	(105,688)
Income tax expense									2,688	5,425
(Loss) income from continuing operations before equity in income (loss) of subsidiaries									(23,572)	(111,113)
Equity in income (loss) of subsidiaries									95,485	74,968
Income (loss) from continuing operations									71,913	(36,145)
Loss from discontinued operations, net of taxes									(3,964)	5,294
Net income (loss)									67,949	(30,851)
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries									2,290	(4,240)
Changes in pension and other employee benefit accounts, net of taxes									411	(3,493)
Currency translation adjustment, net									0	0
Total other comprehensive income (loss)									2,701	(7,733)
Comprehensive income (loss)									70,650	(38,584)
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales									775,915	839,500
Cost of sales									607,172	674,759
Selling, general and administrative expenses									67,907	66,882
Amortization of intangible assets									4,692	6,574
Restructuring and other charges									1,485	1,825
Operating income									94,659	89,460
Interest expense, net									216	213
Intercompany interest (income) expense									1,008	998
(Gain) loss on early extinguishment of debt, net									0	0
Other income, net									(1,737)	(258)
Income (loss) from continuing operations before income taxes									95,172	88,507
Income tax expense									619	(1,893)
(Loss) income from continuing operations before equity in income (loss) of subsidiaries									94,553	90,400
Equity in income (loss) of subsidiaries									(146)	1,644
Income (loss) from continuing operations									94,407	92,044
Loss from discontinued operations, net of taxes									1,078	(17,076)
Net income (loss)									95,485	74,968
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries									(172)	(760)
Changes in pension and other employee benefit accounts, net of taxes									345	55
Currency translation adjustment, net									2,117	(3,535)
Total other comprehensive income (loss)									2,290	(4,240)
Comprehensive income (loss)									97,775	70,728
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales									1,891	3,750
Cost of sales									0	731
Selling, general and administrative expenses									748	718
Amortization of intangible assets									444	468
Restructuring and other charges									0	0
Operating income									699	1,833
Interest expense, net									0	0
Intercompany interest (income) expense									0	0
(Gain) loss on early extinguishment of debt, net									0	0
Other income, net									(117)	(280)
Income (loss) from continuing operations before income taxes									816	2,113
Income tax expense									951	861
(Loss) income from continuing operations before equity in income (loss) of subsidiaries									(135)	1,252
Equity in income (loss) of subsidiaries									0	0
Income (loss) from continuing operations									(135)	1,252
Loss from discontinued operations, net of taxes									(11)	392
Net income (loss)									(146)	1,644
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries									0	0
Changes in pension and other employee benefit accounts, net of taxes									0	0
Currency translation adjustment, net									(172)	(760)
Total other comprehensive income (loss)									(172)	(760)
Comprehensive income (loss)									(318)	884
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales									0	0
Cost of sales									0	0
Selling, general and administrative expenses									0	0
Amortization of intangible assets									0	0
Restructuring and other charges									0	0
Operating income									0	0
Interest expense, net									0	0
Intercompany interest (income) expense									0	0
(Gain) loss on early extinguishment of debt, net									0	0
Other income, net									0	0
Income (loss) from continuing operations before income taxes									0	0
Income tax expense									0	0
(Loss) income from continuing operations before equity in income (loss) of subsidiaries									0	0
Equity in income (loss) of subsidiaries									(163,288)	(45,761)
Income (loss) from continuing operations									(163,288)	(45,761)
Loss from discontinued operations, net of taxes									0	0
Net income (loss)									(163,288)	(45,761)
Other comprehensive income (loss):
Other comprehensive income (loss) of subsidiaries									(4,819)	12,733
Changes in pension and other employee benefit accounts, net of taxes									0	0
Currency translation adjustment, net									0	0
Total other comprehensive income (loss)									(4,819)	12,733
Comprehensive income (loss)									$ (168,107)	$ (33,028)