Condensed Consolidating Financial Information (Condensed Consolidating Statement of Cash Flows) (Details) $ in Thousands	12 Months Ended
	Jan. 02, 2016 USD ($)	Dec. 27, 2014 USD ($)	Dec. 28, 2013 USD ($)
Cash flows from operating activities:
Net cash provided by (used in) operating activities of continuing operations	$ 16,226	$ 6,398	$ 4,457
Net cash provided by operating activities of discontinued operations	15,968	17,517	23,736
Net cash provided by operating activities	32,194	23,915	28,193
Cash flows from investing activities:
Cost of business acquisitions, net of cash acquired	(1,996)	0	(33,166)
Capital expenditures	(25,928)	(32,322)	(24,345)
Purchase of investment	0	(2,000)	(1,650)
Proceeds from sale of property, plant and equipment	8,558	3,766	2,682
Proceeds from sale of assets	2,180	0	0
Net cash used in investing activities of continuing operations	(17,186)	(30,556)	(56,479)
Net cash (used in) provided by investing activities of discontinued operations	(2,282)	(2,712)	48,982
Net cash used in investing activities	(19,468)	(33,268)	(7,497)
Cash flows from financing activities:
Proceeds from issuance of 6.000% senior secured priority notes due 2019	0	540,000	0
Proceeds from issuance of 8.500% junior secured priority notes due 2022	0	250,000	0
Repayment of 7.875% senior subordinated notes	0	0	(67,848)
Repayment of Term Loan B due 2016	0	0	(388,205)
Payment of financing related costs and expenses and debt issuance discounts	(1,596)	(37,994)	(15,570)
Proceeds from issuance of other long-term debt	12,500	0	20,000
Repayments of other long-term debt	(16,545)	(7,695)	(6,789)
Repayment of 11.5% senior notes due 2017	(22,720)	(2,680)	0
Repayment of 8.500% junior secured priority notes due 2022	0	(2,000)	0
Purchase and retirement of common stock upon vesting of RSUs	(216)	(562)	(660)
Repayment under Revolving Credit Facility, net	0	0	(18,000)
Proceeds from issuance of 15% Unsecured Term Loan due 2017	0	0	50,000
Repayment of 15% Unsecured Term Loan due 2017	0	(10,000)	(40,000)
Proceeds from exercise of stock options	0	20	98
Proceeds from issuance of Term Loan Facility due 2017	0	0	360,000
Repayment of Term Loan Facility due 2017	0	(329,100)	(30,900)
Repayment of 8.875% senior second lien notes due 2018	0	(400,000)	0
Borrowings under ABL Facility due 2017	468,300	520,100	699,200
Repayments under ABL Facility due 2017	(454,800)	(506,800)	(577,800)
Intercompany advances	0	0	0
Net cash (used in) provided by financing activities of continuing operations	(15,077)	13,289	(16,474)
Net cash used in financing activities of discontinued operations	(473)	(798)	(1,076)
Net cash (used in) provided by financing activities	(15,550)	12,491	(17,550)
Effect of exchange rate changes on cash and cash equivalents	(1,213)	126	73
Net (decrease) increase in cash and cash equivalents	(4,037)	3,264	3,219
Cash and cash equivalents at beginning of period	14,593	11,329	8,110
Cash and cash equivalents at end of period	10,556	14,593	11,329
Less cash and equivalents of discontinued operations	(2,771)	(2,021)	(900)
Cash and cash equivalents of continuing operations at end of period	7,785	12,572	10,429
Parent Company [Member]
Cash flows from operating activities:
Net cash provided by (used in) operating activities of continuing operations	1,636	2,420	3,739
Net cash provided by operating activities of discontinued operations	0	0	0
Net cash provided by operating activities	1,636	2,420	3,739
Cash flows from investing activities:
Cost of business acquisitions, net of cash acquired	0		0
Capital expenditures	0	0	0
Purchase of investment		0	0
Proceeds from sale of property, plant and equipment	0	0	0
Proceeds from sale of assets	0
Net cash used in investing activities of continuing operations	0	0	0
Net cash (used in) provided by investing activities of discontinued operations	0	0	0
Net cash used in investing activities	0	0	0
Cash flows from financing activities:
Proceeds from issuance of 6.000% senior secured priority notes due 2019		0
Proceeds from issuance of 8.500% junior secured priority notes due 2022		0
Repayment of 7.875% senior subordinated notes			0
Repayment of Term Loan B due 2016			0
Payment of financing related costs and expenses and debt issuance discounts	0	0	0
Proceeds from issuance of other long-term debt	0		0
Repayments of other long-term debt	0	0	0
Repayment of 11.5% senior notes due 2017	0	0
Repayment of 8.500% junior secured priority notes due 2022		0
Purchase and retirement of common stock upon vesting of RSUs	(216)	(562)	(660)
Repayment under Revolving Credit Facility, net			0
Proceeds from issuance of 15% Unsecured Term Loan due 2017			0
Repayment of 15% Unsecured Term Loan due 2017		0	0
Proceeds from exercise of stock options		20	98
Proceeds from issuance of Term Loan Facility due 2017			0
Repayment of Term Loan Facility due 2017		0	0
Repayment of 8.875% senior second lien notes due 2018		0
Borrowings under ABL Facility due 2017	0	0	0
Repayments under ABL Facility due 2017	0	0	0
Intercompany advances	(1,420)	(1,878)	(3,177)
Net cash (used in) provided by financing activities of continuing operations	(1,636)	(2,420)	(3,739)
Net cash used in financing activities of discontinued operations	0	0	0
Net cash (used in) provided by financing activities	(1,636)	(2,420)	(3,739)
Effect of exchange rate changes on cash and cash equivalents	0	0	0
Net (decrease) increase in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of period	0	0	0
Cash and cash equivalents at end of period	0	0	0
Less cash and equivalents of discontinued operations	0	0	0
Cash and cash equivalents of continuing operations at end of period	0	0	0
Subsidiary Issuer [Member]
Cash flows from operating activities:
Net cash provided by (used in) operating activities of continuing operations	(110,318)	(91,517)	(117,743)
Net cash provided by operating activities of discontinued operations	0	(884)	6,227
Net cash provided by operating activities	(110,318)	(92,401)	(111,516)
Cash flows from investing activities:
Cost of business acquisitions, net of cash acquired	(1,996)		(33,166)
Capital expenditures	(18,448)	(24,554)	(13,708)
Purchase of investment		(2,000)	(1,650)
Proceeds from sale of property, plant and equipment	7,673	3,465	258
Proceeds from sale of assets	0
Net cash used in investing activities of continuing operations	(12,771)	(23,089)	(48,266)
Net cash (used in) provided by investing activities of discontinued operations	0	1,033	23,160
Net cash used in investing activities	(12,771)	(22,056)	(25,106)
Cash flows from financing activities:
Proceeds from issuance of 6.000% senior secured priority notes due 2019		540,000
Proceeds from issuance of 8.500% junior secured priority notes due 2022		250,000
Repayment of 7.875% senior subordinated notes			(67,848)
Repayment of Term Loan B due 2016			(388,205)
Payment of financing related costs and expenses and debt issuance discounts	(1,596)	(37,994)	(15,570)
Proceeds from issuance of other long-term debt	12,500		20,000
Repayments of other long-term debt	(17,721)	(6,967)	(3,036)
Repayment of 11.5% senior notes due 2017	(22,720)	(2,680)
Repayment of 8.500% junior secured priority notes due 2022		(2,000)
Purchase and retirement of common stock upon vesting of RSUs	0	0	0
Repayment under Revolving Credit Facility, net			(18,000)
Proceeds from issuance of 15% Unsecured Term Loan due 2017			50,000
Repayment of 15% Unsecured Term Loan due 2017		(10,000)	(40,000)
Proceeds from exercise of stock options		0	0
Proceeds from issuance of Term Loan Facility due 2017			360,000
Repayment of Term Loan Facility due 2017		(329,100)	(30,900)
Repayment of 8.875% senior second lien notes due 2018		(400,000)
Borrowings under ABL Facility due 2017	468,300	520,100	699,200
Repayments under ABL Facility due 2017	(454,800)	(506,800)	(577,800)
Intercompany advances	133,719	101,359	152,522
Net cash (used in) provided by financing activities of continuing operations	117,682	115,918	140,363
Net cash used in financing activities of discontinued operations	0	0	0
Net cash (used in) provided by financing activities	117,682	115,918	140,363
Effect of exchange rate changes on cash and cash equivalents	0	0	0
Net (decrease) increase in cash and cash equivalents	(5,407)	1,461	3,741
Cash and cash equivalents at beginning of period	10,965	9,504	5,763
Cash and cash equivalents at end of period	5,558	10,965	9,504
Less cash and equivalents of discontinued operations	0	0	0
Cash and cash equivalents of continuing operations at end of period	5,558	10,965	9,504
Guarantor Subsidiaries [Member]
Cash flows from operating activities:
Net cash provided by (used in) operating activities of continuing operations	122,254	99,190	118,207
Net cash provided by operating activities of discontinued operations	15,230	17,456	17,676
Net cash provided by operating activities	137,484	116,646	135,883
Cash flows from investing activities:
Cost of business acquisitions, net of cash acquired	0		0
Capital expenditures	(6,921)	(7,550)	(10,534)
Purchase of investment		0	0
Proceeds from sale of property, plant and equipment	885	301	2,424
Proceeds from sale of assets	2,180
Net cash used in investing activities of continuing operations	(3,856)	(7,249)	(8,110)
Net cash (used in) provided by investing activities of discontinued operations	(2,282)	(3,745)	25,822
Net cash used in investing activities	(6,138)	(10,994)	17,712
Cash flows from financing activities:
Proceeds from issuance of 6.000% senior secured priority notes due 2019		0
Proceeds from issuance of 8.500% junior secured priority notes due 2022		0
Repayment of 7.875% senior subordinated notes			0
Repayment of Term Loan B due 2016			0
Payment of financing related costs and expenses and debt issuance discounts	0	0	0
Proceeds from issuance of other long-term debt	0		0
Repayments of other long-term debt	1,176	(728)	(3,753)
Repayment of 11.5% senior notes due 2017	0	0
Repayment of 8.500% junior secured priority notes due 2022		0
Purchase and retirement of common stock upon vesting of RSUs	0	0	0
Repayment under Revolving Credit Facility, net			0
Proceeds from issuance of 15% Unsecured Term Loan due 2017			0
Repayment of 15% Unsecured Term Loan due 2017		0	0
Proceeds from exercise of stock options		0	0
Proceeds from issuance of Term Loan Facility due 2017			0
Repayment of Term Loan Facility due 2017		0	0
Repayment of 8.875% senior second lien notes due 2018		0
Borrowings under ABL Facility due 2017	0	0	0
Repayments under ABL Facility due 2017	0	0	0
Intercompany advances	(130,879)	(103,450)	(149,225)
Net cash (used in) provided by financing activities of continuing operations	(129,703)	(104,178)	(152,978)
Net cash used in financing activities of discontinued operations	(473)	(798)	(1,076)
Net cash (used in) provided by financing activities	(130,176)	(104,976)	(154,054)
Effect of exchange rate changes on cash and cash equivalents	(1,690)	168	173
Net (decrease) increase in cash and cash equivalents	(520)	844	(286)
Cash and cash equivalents at beginning of period	844	0	286
Cash and cash equivalents at end of period	324	844	0
Less cash and equivalents of discontinued operations	(89)	(77)	0
Cash and cash equivalents of continuing operations at end of period	235	767	0
Non-Guarantor Subsidiaries [Member]
Cash flows from operating activities:
Net cash provided by (used in) operating activities of continuing operations	2,654	(3,695)	254
Net cash provided by operating activities of discontinued operations	738	945	(167)
Net cash provided by operating activities	3,392	(2,750)	87
Cash flows from investing activities:
Cost of business acquisitions, net of cash acquired	0		0
Capital expenditures	(559)	(218)	(103)
Purchase of investment		0	0
Proceeds from sale of property, plant and equipment	0	0	0
Proceeds from sale of assets	0
Net cash used in investing activities of continuing operations	(559)	(218)	(103)
Net cash (used in) provided by investing activities of discontinued operations	0	0	0
Net cash used in investing activities	(559)	(218)	(103)
Cash flows from financing activities:
Proceeds from issuance of 6.000% senior secured priority notes due 2019		0
Proceeds from issuance of 8.500% junior secured priority notes due 2022		0
Repayment of 7.875% senior subordinated notes			0
Repayment of Term Loan B due 2016			0
Payment of financing related costs and expenses and debt issuance discounts	0	0	0
Proceeds from issuance of other long-term debt	0		0
Repayments of other long-term debt	0	0	0
Repayment of 11.5% senior notes due 2017	0	0
Repayment of 8.500% junior secured priority notes due 2022		0
Purchase and retirement of common stock upon vesting of RSUs	0	0	0
Repayment under Revolving Credit Facility, net			0
Proceeds from issuance of 15% Unsecured Term Loan due 2017			0
Repayment of 15% Unsecured Term Loan due 2017		0	0
Proceeds from exercise of stock options		0	0
Proceeds from issuance of Term Loan Facility due 2017			0
Repayment of Term Loan Facility due 2017		0	0
Repayment of 8.875% senior second lien notes due 2018		0
Borrowings under ABL Facility due 2017	0	0	0
Repayments under ABL Facility due 2017	0	0	0
Intercompany advances	(1,420)	3,969	(120)
Net cash (used in) provided by financing activities of continuing operations	(1,420)	3,969	(120)
Net cash used in financing activities of discontinued operations	0	0	0
Net cash (used in) provided by financing activities	(1,420)	3,969	(120)
Effect of exchange rate changes on cash and cash equivalents	477	(42)	(100)
Net (decrease) increase in cash and cash equivalents	1,890	959	(236)
Cash and cash equivalents at beginning of period	2,784	1,825	2,061
Cash and cash equivalents at end of period	4,674	2,784	1,825
Less cash and equivalents of discontinued operations	(2,682)	(1,944)	(900)
Cash and cash equivalents of continuing operations at end of period	1,992	840	925
Eliminations [Member]
Cash flows from operating activities:
Net cash provided by (used in) operating activities of continuing operations	0	0	0
Net cash provided by operating activities of discontinued operations	0	0	0
Net cash provided by operating activities	0	0	0
Cash flows from investing activities:
Cost of business acquisitions, net of cash acquired	0		0
Capital expenditures	0	0	0
Purchase of investment		0	0
Proceeds from sale of property, plant and equipment	0	0	0
Proceeds from sale of assets	0
Net cash used in investing activities of continuing operations	0	0	0
Net cash (used in) provided by investing activities of discontinued operations	0	0	0
Net cash used in investing activities	0	0	0
Cash flows from financing activities:
Proceeds from issuance of 6.000% senior secured priority notes due 2019		0
Proceeds from issuance of 8.500% junior secured priority notes due 2022		0
Repayment of 7.875% senior subordinated notes			0
Repayment of Term Loan B due 2016			0
Payment of financing related costs and expenses and debt issuance discounts	0	0	0
Proceeds from issuance of other long-term debt	0		0
Repayments of other long-term debt	0	0	0
Repayment of 11.5% senior notes due 2017	0	0
Repayment of 8.500% junior secured priority notes due 2022		0
Purchase and retirement of common stock upon vesting of RSUs	0	0	0
Repayment under Revolving Credit Facility, net			0
Proceeds from issuance of 15% Unsecured Term Loan due 2017			0
Repayment of 15% Unsecured Term Loan due 2017		0	0
Proceeds from exercise of stock options		0	0
Proceeds from issuance of Term Loan Facility due 2017			0
Repayment of Term Loan Facility due 2017		0	0
Repayment of 8.875% senior second lien notes due 2018		0
Borrowings under ABL Facility due 2017	0	0	0
Repayments under ABL Facility due 2017	0	0	0
Intercompany advances	0	0	0
Net cash (used in) provided by financing activities of continuing operations	0	0	0
Net cash used in financing activities of discontinued operations	0	0	0
Net cash (used in) provided by financing activities	0	0	0
Effect of exchange rate changes on cash and cash equivalents	0	0	0
Net (decrease) increase in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of period	0	0	0
Cash and cash equivalents at end of period	0	0	0
Less cash and equivalents of discontinued operations	0	0	0
Cash and cash equivalents of continuing operations at end of period	$ 0	$ 0	$ 0