Income (Loss) Per Share (Computation of Basic and Diluted Income (Loss) per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 02, 2016	Mar. 28, 2015
Earnings Per Share [Abstract]
Income (loss) from continuing operations	$ 13,020	$ (8,179)
(Loss) income from discontinued operations, net of taxes	(1,817)	500
Net income (loss)	11,203	(7,679)
Interest expense on 7% Notes, net of taxes	1,210	0
Income (loss) from continuing operations - after assumed conversions of dilutive shares	14,230	(8,179)
Net income (loss) for diluted loss per share - after assumed conversions of dilutive shares	$ 12,413	$ (7,679)
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic shares	67,874	67,746
Dilutive effect of 7% Notes (shares)	15,053	0
Dilutive effect of Equity Awards (shares)	0	0
Diluted shares	82,927	67,746
Income (loss) per share – basic:
Continuing operations per share - basic	$ 0.19	$ (0.12)
Discontinued operations per share - basic	(0.02)	0.01
Net income (loss) per share - basic	0.17	(0.11)
Income (loss) per share – diluted:
Continuing operations per share - diluted	0.17	(0.12)
Discontinued operations per share - diluted	(0.02)	0.01
Net income (loss) per share - diluted	$ 0.15	$ (0.11)