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		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Earnings Per Share [Abstract]
(Loss) income from continuing operations	$ (10,794)	$ 13,427	$ (66,882)	$ (26,059)
(Loss) income from discontinued operations, net of taxes	(99)	13,492	1,518	14,950
Net (loss) income	(10,893)	26,919	(65,364)	(11,109)
Interest expense on 7% Notes, net of taxes	0	1,020	0	0
(Loss) income from continuing operations - after assumed conversions of dilutive shares	(10,794)	14,447	(66,882)	(26,059)
Net (loss) income for diluted loss per share - after assumed conversions of dilutive shares	$ (10,893)	$ 27,939	$ (65,364)	$ (11,109)
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic shares	67,296	64,333	66,709	64,032
Dilutive effect of 7% Notes (shares)	0	20,831	0	0
Dilutive effect of Equity Awards (shares)	0	868	0	0
Diluted shares	67,296	86,032	66,709	64,032
(Loss) income per share – basic:
Continuing operations per share - basic	$ (0.16)	$ 0.21	$ (1.00)	$ (0.40)
Discontinued operations per share - basic	$ 0.00	$ 0.21	$ 0.02	$ 0.23
Net (loss) income per share - basic	$ (0.16)	$ 0.42	$ (0.98)	$ (0.17)
(Loss) income per share – diluted:
Continuing operations per share - diluted	$ (0.16)	$ 0.16	$ (1.00)	$ (0.40)
Discontinued operations per share - diluted	$ 0.00	$ 0.16	$ 0.02	$ 0.23
Net (loss) income per share - diluted	$ (0.16)	$ 0.32	$ (0.98)	$ (0.17)