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. 30, 2016	Oct. 02, 2015	Sep. 30, 2016	Oct. 02, 2015
Earnings Per Share [Abstract]
Weighted-average number of shares outstanding during period	15,649	15,477	15,586	15,441
Common stock equivalents - incremental shares primarily under equity-based compensation plans		387		463
Number of shares on which diluted earnings per share is based	15,649	15,864	15,586	15,904
Net Income (loss)	$ (16,183)	$ 2,071	$ (35,781)	$ 3,892
Net income (loss) per share, basic	$ (1.03)	$ 0.13	$ (2.30)	$ 0.25
Net income (loss) per share, diluted	$ (1.03)	$ 0.13	$ (2.30)	$ 0.24