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								12 Months Ended
	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Jan. 02, 2016	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 31, 2016	Jan. 02, 2016
Earnings Per Share [Abstract]
Income (loss) from continuing operations	$ (1,779)	$ 8,745	$ 50,860	$ 13,020	$ (4,365)	$ (3,562)	$ (3,355)	$ (8,179)	$ 70,846	$ (19,461)
Loss from discontinued operations, net of taxes	1,538	686	(3,304)	(1,817)	(13,159)	319	950	500	(2,897)	(11,390)
Net income (loss)	$ (241)	$ 9,431	$ 47,556	$ 11,203	$ (17,524)	$ (3,243)	$ (2,405)	$ (7,679)	67,949	(30,851)
Interest expense on 7% Notes, net of taxes									1,572	0
Income (loss) from continuing operations - after assumed conversions of dilutive shares									72,418	(19,461)
Net income (loss) for diluted loss per share - after assumed conversions of dilutive shares									$ 69,521	$ (30,851)
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic shares									8,527	8,479
Dilutive effect of 7% Notes (shares)									965	0
Dilutive effect of Equity Awards (shares)									0	0
Dilutive effect of Warrants (shares)									0	0
Diluted shares									9,492	8,479
Income (loss) per share – basic:
Continuing operations per share - basic	$ (0.21)	$ 1.02	$ 5.97	$ 1.53	$ (0.51)	$ (0.42)	$ (0.39)	$ (0.97)	$ 8.31	$ (2.30)
Discontinued operations per share - basic	0.18	0.08	(0.39)	(0.21)	(1.56)	0.04	0.11	0.06	(0.34)	(1.34)
Net income (loss) per share - basic	(0.03)	1.10	5.58	1.32	(2.07)	(0.38)	(0.28)	(0.91)	7.97	(3.64)
Income (loss) per share – diluted:
Continuing operations per share - diluted	(0.21)	1.00	5.15	1.37	(0.51)	(0.42)	(0.39)	(0.97)	7.63	(2.30)
Discontinued operations per share - diluted	0.18	0.08	(0.33)	(0.17)	(1.56)	0.04	0.11	0.06	(0.31)	(1.34)
Net income (loss) per share - diluted	$ (0.03)	$ 1.08	$ 4.82	$ 1.20	$ (2.07)	$ (0.38)	$ (0.28)	$ (0.91)	$ 7.32	$ (3.64)