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. 01, 2017	Apr. 02, 2016
Earnings Per Share [Abstract]
(Loss) income from continuing operations	$ (8,692)	$ 13,020
Loss from discontinued operations, net of taxes	0	(1,817)
Net (loss) income	(8,692)	11,203
Interest expense on 7% Notes, net of taxes	0	1,210
(Loss) income from continuing operations - after assumed conversions of dilutive shares	(8,692)	14,230
Net (loss) income for diluted loss per share - after assumed conversions of dilutive shares	$ (8,692)	$ 12,413
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic shares	8,553	8,484
Dilutive effect of 7% Notes (shares)	0	1,882
Dilutive effect of Equity Awards (shares)	0	0
Dilutive effect of warrants (shares)	0	0
Diluted shares	8,553	10,366
(Loss) income per share – basic:
Continuing operations per share - basic	$ (1.02)	$ 1.53
Discontinued operations per share - basic	0.00	(0.21)
Net income (loss) per share - basic	(1.02)	1.32
(Loss) income per share – diluted:
Continuing operations per share - diluted	(1.02)	1.38
Discontinued operations per share - diluted	0.00	(0.18)
Net income (loss) per share - diluted	$ (1.02)	$ 1.20