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		6 Months Ended
	Jul. 02, 2016	Jun. 27, 2015	Jul. 02, 2016	Jun. 27, 2015
Earnings Per Share [Abstract]
Income (loss) from continuing operations	$ 50,860	$ (3,355)	$ 63,880	$ (11,534)
(Loss) income from discontinued operations, net of taxes	(3,304)	950	(5,121)	1,450
Net income (loss)	47,556	(2,405)	58,759	(10,084)
Interest expense on 7% Notes, net of taxes	572	0	1,311	0
Income (loss) from continuing operations - after assumed conversions of dilutive shares	51,432	(3,355)	65,191	(11,534)
Net income (loss) for diluted loss per share - after assumed conversions of dilutive shares	$ 48,128	$ (2,405)	$ 60,070	$ (10,084)
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic shares	8,517	8,479	8,501	8,474
Dilutive effect of 7% Notes (shares)	1,460	0	1,642	0
Dilutive effect of Equity Awards (shares)	0	0	0	0
Dilutive effect of Warrants (shares)	0	0	0	0
Diluted shares	9,977	8,479	10,143	8,474
Income (loss) per share – basic:
Continuing operations per share - basic	$ 5.97	$ (0.39)	$ 7.51	$ (1.36)
Discontinued operations per share - basic	(0.39)	0.11	(0.60)	0.17
Net income (loss) per share - basic	5.58	(0.28)	6.91	(1.19)
Income (loss) per share – diluted:
Continuing operations per share - diluted	5.15	(0.39)	6.43	(1.36)
Discontinued operations per share - diluted	(0.33)	0.11	(0.51)	0.17
Net income (loss) per share - diluted	$ 4.82	$ (0.28)	$ 5.92	$ (1.19)