Net Income (Loss) Per Share - Schedule of Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 30, 2016	Sep. 29, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Weighted-average number of shares outstanding during period	15,013	15,649	15,150	15,586
Common stock equivalents from incremental shares under equity-based compensation plans	303		258
Number of shares on which diluted earnings per share is based	15,316	15,649	15,408	15,586
Net income (loss)	$ 40	$ (16,183)	$ 1,225	$ (35,781)
Net income (loss) per share, basic	$ 0.00	$ (1.03)	$ 0.08	$ (2.30)
Net income (loss) per share, diluted	$ 0.00	$ (1.03)	$ 0.08	$ (2.30)