Long-Term Debt (Extinguishments) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Sep. 30, 2017	Oct. 01, 2016	Jun. 10, 2016
Debt Instrument [Line Items]
Gains (losses) on extinguishment of debt	$ (38)			$ 7,442			$ (146)	$ 80,328
Convertible debt [Member] | 7% senior exchangeable notes due 2017 [Member]
Debt Instrument [Line Items]
Debt extinguishment amount		$ 5,500		21,000	$ 16,500	$ 34,500
Gains (losses) on extinguishment of debt				$ 7,400	5,400	16,500
Senior unsecured debt [Member] | 11.5% senior notes due 2017 [Member]
Debt Instrument [Line Items]
Debt extinguishment amount			$ 20,500			10,000
Gains (losses) on extinguishment of debt			$ (100)			$ 5,100
Asset based lending facility [Member] | ABL Facility due 2021 [Member]
Debt Instrument [Line Items]
Gains (losses) on extinguishment of debt					(200)
Exchange Offer [Member] | Senior unsecured debt [Member] | 11.5% senior notes due 2017 [Member]
Debt Instrument [Line Items]
Gains (losses) on extinguishment of debt					46,100
Debt exchange, percentage exchanged (percent)									80.00%
Affiliate Noteholders [Member] | Exchange Offer [Member] | Senior unsecured debt [Member] | 11.5% senior notes due 2017 [Member]
Debt Instrument [Line Items]
Gains (losses) on extinguishment of debt					1,200
Affiliate Noteholders [Member] | Affiliate Exchange Agreement [Member] | Senior unsecured debt [Member] | 11.5% senior notes due 2017 [Member]
Debt Instrument [Line Items]
Debt extinguishment amount					$ 4,200