Condensed Consolidating Financial Information (Condensed Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016
Cash flows from operating activities:
Net cash provided by (used in) operating activities of continuing operations	$ 49,383	$ 16,226
Net cash (used in) provided by operating activities of discontinued operations	(10,512)	15,968
Net cash provided by operating activities	38,871	32,194
Cash flows from investing activities:
Cost of business acquisitions, net of cash acquired	0	(1,996)
Capital expenditures	(41,137)	(25,928)
Proceeds from sale of property, plant and equipment	8,330	8,558
Proceeds from sale of assets	2,000	2,180
Net cash used in investing activities of continuing operations	(30,807)	(17,186)
Net cash provided by (used in) investing activities of discontinued operations	95,866	(2,282)
Net cash provided by (used in) investing activities	65,059	(19,468)
Cash flows from financing activities:
Proceeds from issuance of 4% senior secured notes due 2021	50,000	0
Payment of financing related costs and expenses and debt issuance discounts	(11,576)	(1,596)
Proceeds from issuance of other long-term debt	0	12,500
Repayments of other long-term debt	(5,578)	(16,545)
Repayment of 11.5% senior notes due 2017	(24,725)	(22,720)
Repayment of 7% senior exchangeable notes due 2017	(45,903)	0
Repayment of 8.500% junior secured priority notes due 2022	(4,550)	0
Purchase and retirement of common stock upon vesting of restricted stock units	(346)	(216)
Borrowings under asset-based revolving credit facility due 2021	474,300	468,300
Repayments under asset-based revolving credit facility due 2021	(540,800)	(454,800)
Intercompany advances	0	0
Net cash (used in) provided by financing activities of continuing operations	(109,178)	(15,077)
Net cash used in financing activities of discontinued operations	(8)	(473)
Net cash used in financing activities	(109,186)	(15,550)
Effect of exchange rate changes on cash and cash equivalents	232	(1,213)
Net decrease in cash and cash equivalents	(5,024)	(4,037)
Cash and cash equivalents at beginning of period	10,556	14,593
Cash and cash equivalents at end of period	5,532	10,556
Less cash and cash equivalents of discontinued operations	0	(2,771)
Cash and cash equivalents of continuing operations at end of period	5,532	7,785
Parent Company [Member]
Cash flows from operating activities:
Net cash provided by (used in) operating activities of continuing operations	1,468	1,636
Net cash (used in) provided by operating activities of discontinued operations	0	0
Net cash provided by operating activities	1,468	1,636
Cash flows from investing activities:
Cost of business acquisitions, net of cash acquired		0
Capital expenditures	0	0
Proceeds from sale of property, plant and equipment	0	0
Proceeds from sale of assets	0	0
Net cash used in investing activities of continuing operations	0	0
Net cash provided by (used in) investing activities of discontinued operations	0	0
Net cash provided by (used in) investing activities	0	0
Cash flows from financing activities:
Proceeds from issuance of 4% senior secured notes due 2021	0
Payment of financing related costs and expenses and debt issuance discounts	0	0
Proceeds from issuance of other long-term debt		0
Repayments of other long-term debt	0	0
Repayment of 11.5% senior notes due 2017	0	0
Repayment of 7% senior exchangeable notes due 2017	0
Repayment of 8.500% junior secured priority notes due 2022	0
Purchase and retirement of common stock upon vesting of restricted stock units	(346)	(216)
Borrowings under asset-based revolving credit facility due 2021	0	0
Repayments under asset-based revolving credit facility due 2021	0	0
Intercompany advances	(1,122)	(1,420)
Net cash (used in) provided by financing activities of continuing operations	(1,468)	(1,636)
Net cash used in financing activities of discontinued operations	0	0
Net cash used in financing activities	(1,468)	(1,636)
Effect of exchange rate changes on cash and cash equivalents	0	0
Net decrease in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Less cash and cash equivalents of discontinued operations		0
Cash and cash equivalents of continuing operations at end of period	0	0
Subsidiary Issuer [Member]
Cash flows from operating activities:
Net cash provided by (used in) operating activities of continuing operations	(93,513)	(110,318)
Net cash (used in) provided by operating activities of discontinued operations	0	0
Net cash provided by operating activities	(93,513)	(110,318)
Cash flows from investing activities:
Cost of business acquisitions, net of cash acquired		(1,996)
Capital expenditures	(19,281)	(18,448)
Proceeds from sale of property, plant and equipment	8,189	7,673
Proceeds from sale of assets	0	0
Net cash used in investing activities of continuing operations	(11,092)	(12,771)
Net cash provided by (used in) investing activities of discontinued operations	0	0
Net cash provided by (used in) investing activities	(11,092)	(12,771)
Cash flows from financing activities:
Proceeds from issuance of 4% senior secured notes due 2021	50,000
Payment of financing related costs and expenses and debt issuance discounts	(11,576)	(1,596)
Proceeds from issuance of other long-term debt		12,500
Repayments of other long-term debt	(5,381)	(17,721)
Repayment of 11.5% senior notes due 2017	(24,725)	(22,720)
Repayment of 7% senior exchangeable notes due 2017	(45,903)
Repayment of 8.500% junior secured priority notes due 2022	(4,550)
Purchase and retirement of common stock upon vesting of restricted stock units	0	0
Borrowings under asset-based revolving credit facility due 2021	474,300	468,300
Repayments under asset-based revolving credit facility due 2021	(540,800)	(454,800)
Intercompany advances	212,360	133,719
Net cash (used in) provided by financing activities of continuing operations	103,725	117,682
Net cash used in financing activities of discontinued operations	0	0
Net cash used in financing activities	103,725	117,682
Effect of exchange rate changes on cash and cash equivalents	0	0
Net decrease in cash and cash equivalents	(880)	(5,407)
Cash and cash equivalents at beginning of period	5,558	10,965
Cash and cash equivalents at end of period	4,678	5,558
Less cash and cash equivalents of discontinued operations		0
Cash and cash equivalents of continuing operations at end of period	4,678	5,558
Guarantor Subsidiaries [Member]
Cash flows from operating activities:
Net cash provided by (used in) operating activities of continuing operations	142,605	122,254
Net cash (used in) provided by operating activities of discontinued operations	(10,074)	15,230
Net cash provided by operating activities	132,531	137,484
Cash flows from investing activities:
Cost of business acquisitions, net of cash acquired		0
Capital expenditures	(21,120)	(6,921)
Proceeds from sale of property, plant and equipment	141	885
Proceeds from sale of assets	2,000	2,180
Net cash used in investing activities of continuing operations	(18,979)	(3,856)
Net cash provided by (used in) investing activities of discontinued operations	89,379	(2,282)
Net cash provided by (used in) investing activities	70,400	(6,138)
Cash flows from financing activities:
Proceeds from issuance of 4% senior secured notes due 2021	0
Payment of financing related costs and expenses and debt issuance discounts	0	0
Proceeds from issuance of other long-term debt		0
Repayments of other long-term debt	(197)	1,176
Repayment of 11.5% senior notes due 2017	0	0
Repayment of 7% senior exchangeable notes due 2017	0
Repayment of 8.500% junior secured priority notes due 2022	0
Purchase and retirement of common stock upon vesting of restricted stock units	0	0
Borrowings under asset-based revolving credit facility due 2021	0	0
Repayments under asset-based revolving credit facility due 2021	0	0
Intercompany advances	(203,366)	(130,879)
Net cash (used in) provided by financing activities of continuing operations	(203,563)	(129,703)
Net cash used in financing activities of discontinued operations	(8)	(473)
Net cash used in financing activities	(203,571)	(130,176)
Effect of exchange rate changes on cash and cash equivalents	316	(1,690)
Net decrease in cash and cash equivalents	(324)	(520)
Cash and cash equivalents at beginning of period	324	844
Cash and cash equivalents at end of period	0	324
Less cash and cash equivalents of discontinued operations		(89)
Cash and cash equivalents of continuing operations at end of period	0	235
Non-Guarantor Subsidiaries [Member]
Cash flows from operating activities:
Net cash provided by (used in) operating activities of continuing operations	(1,177)	2,654
Net cash (used in) provided by operating activities of discontinued operations	(438)	738
Net cash provided by operating activities	(1,615)	3,392
Cash flows from investing activities:
Cost of business acquisitions, net of cash acquired		0
Capital expenditures	(736)	(559)
Proceeds from sale of property, plant and equipment	0	0
Proceeds from sale of assets	0	0
Net cash used in investing activities of continuing operations	(736)	(559)
Net cash provided by (used in) investing activities of discontinued operations	6,487	0
Net cash provided by (used in) investing activities	5,751	(559)
Cash flows from financing activities:
Proceeds from issuance of 4% senior secured notes due 2021	0
Payment of financing related costs and expenses and debt issuance discounts	0	0
Proceeds from issuance of other long-term debt		0
Repayments of other long-term debt	0	0
Repayment of 11.5% senior notes due 2017	0	0
Repayment of 7% senior exchangeable notes due 2017	0
Repayment of 8.500% junior secured priority notes due 2022	0
Purchase and retirement of common stock upon vesting of restricted stock units	0	0
Borrowings under asset-based revolving credit facility due 2021	0	0
Repayments under asset-based revolving credit facility due 2021	0	0
Intercompany advances	(7,872)	(1,420)
Net cash (used in) provided by financing activities of continuing operations	(7,872)	(1,420)
Net cash used in financing activities of discontinued operations	0	0
Net cash used in financing activities	(7,872)	(1,420)
Effect of exchange rate changes on cash and cash equivalents	(84)	477
Net decrease in cash and cash equivalents	(3,820)	1,890
Cash and cash equivalents at beginning of period	4,674	2,784
Cash and cash equivalents at end of period	854	4,674
Less cash and cash equivalents of discontinued operations		(2,682)
Cash and cash equivalents of continuing operations at end of period	854	1,992
Eliminations [Member]
Cash flows from operating activities:
Net cash provided by (used in) operating activities of continuing operations	0	0
Net cash (used in) provided by operating activities of discontinued operations	0	0
Net cash provided by operating activities	0	0
Cash flows from investing activities:
Cost of business acquisitions, net of cash acquired		0
Capital expenditures	0	0
Proceeds from sale of property, plant and equipment	0	0
Proceeds from sale of assets	0	0
Net cash used in investing activities of continuing operations	0	0
Net cash provided by (used in) investing activities of discontinued operations	0	0
Net cash provided by (used in) investing activities	0	0
Cash flows from financing activities:
Proceeds from issuance of 4% senior secured notes due 2021	0
Payment of financing related costs and expenses and debt issuance discounts	0	0
Proceeds from issuance of other long-term debt		0
Repayments of other long-term debt	0	0
Repayment of 11.5% senior notes due 2017	0	0
Repayment of 7% senior exchangeable notes due 2017	0
Repayment of 8.500% junior secured priority notes due 2022	0
Purchase and retirement of common stock upon vesting of restricted stock units	0	0
Borrowings under asset-based revolving credit facility due 2021	0	0
Repayments under asset-based revolving credit facility due 2021	0	0
Intercompany advances	0	0
Net cash (used in) provided by financing activities of continuing operations	0	0
Net cash used in financing activities of discontinued operations	0	0
Net cash used in financing activities	0	0
Effect of exchange rate changes on cash and cash equivalents	0	0
Net decrease in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Less cash and cash equivalents of discontinued operations		0
Cash and cash equivalents of continuing operations at end of period	$ 0	$ 0