Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016	Sep. 27, 2015
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income (loss)	$ 4,489	$ 7,239	$ 16,010	$ (7,014)
Net income (loss) available to common stockholders	$ 3,495	$ 5,642	$ 12,438	$ (7,014)
Weighted average common shares outstanding	35,237,053	35,009,656	35,152,091	34,930,326
Basic net income (loss) per share	$ 0.10	$ 0.16	$ 0.35	$ (0.20)
Dilutive effect of preferred stock and non-vested shares	9,618,725	9,668,858	9,740,097	0
Shares used in computing diluted net income (loss) per share	44,855,778	44,678,514	44,892,188	34,930,326
Diluted net income (loss) per share	$ 0.10	$ 0.16	$ 0.35	$ (0.20)
Shares excluded from diluted net income (loss) per share computations (1)	0	0	0	9,886,530
Restricted Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Less: Income attributable to participating securities	$ (60)	$ (80)	$ (240)	$ 0
Preferred Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Less: Income attributable to participating securities	$ (934)	$ (1,517)	$ (3,332)	$ 0