Income (Loss) Per Share (Computation of Basic and Diluted Income (Loss) per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 27, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012
Earnings Per Share [Abstract]
Loss from continuing operations	$ (19,437)	$ (10,794)	$ (39,301)	$ (16,787)	$ (59,468)	$ 13,427	$ (18,996)	$ (20,490)	$ (86,319)	$ (85,527)	$ (80,528)
Income from discontinued operations, net of taxes	938	(99)	664	953	1,791	13,492	113	1,345	2,456	16,741	641
Net loss	$ (18,499)	$ (10,893)	$ (38,637)	$ (15,834)	$ (57,677)	$ 26,919	$ (18,883)	$ (19,145)	$ (83,863)	$ (68,786)	$ (79,887)
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic shares									66,952	64,576	63,567
Dilutive effect of 7% Notes (shares)									0	0	0
Dilutive effect of Equity Awards (shares)									0	0	0
Diluted shares									66,952	64,576	63,567
(Loss) income per share – basic:
Loss per share from continuing operations - basic	$ (0.29)	$ (0.16)	$ (0.59)	$ (0.25)	$ (0.90)	$ 0.21	$ (0.30)	$ (0.32)	$ (1.29)	$ (1.32)	$ (1.27)
Discontinued operations per share - basic	$ 0.02	$ 0.00	$ 0.01	$ 0.01	$ 0.03	$ 0.21	$ 0.00	$ 0.02	$ 0.04	$ 0.25	$ 0.01
Net loss per share - basic	$ (0.27)	$ (0.16)	$ (0.58)	$ (0.24)	$ (0.87)	$ 0.42	$ (0.30)	$ (0.30)	$ (1.25)	$ (1.07)	$ (1.26)
(Loss) income per share – diluted:
Loss per share from continuing operations - diluted	$ (0.29)	$ (0.16)	$ (0.59)	$ (0.25)	$ (0.90)	$ 0.16	$ (0.30)	$ (0.32)	$ (1.29)	$ (1.32)	$ (1.27)
Discontinued operations per share - diluted	$ 0.02	$ 0.00	$ 0.01	$ 0.01	$ 0.03	$ 0.16	$ 0.00	$ 0.02	$ 0.04	$ 0.25	$ 0.01
Net loss per share - diluted	$ (0.27)	$ (0.16)	$ (0.58)	$ (0.24)	$ (0.87)	$ 0.32	$ (0.30)	$ (0.30)	$ (1.25)	$ (1.07)	$ (1.26)