Stockholders' Equity and Stock-Based Compensation - Share Repurchases (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of shares of common stock repurchased	0	111,050	362,633
Weighted average price (in dollars per share)		$ 15.49	$ 14.74
Total cost of repurchase		$ 1,721	$ 5,344
Amount available for repurchase at end of period		$ 4,397	$ 6,118