Summary of Significant Accounting Policies - Weighted Average Number of Shares Outstanding Used to Compute Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Oct. 03, 2015	Jul. 04, 2015	Apr. 04, 2015	Dec. 31, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Net (Loss) Income	$ (63,576)	$ (9,515)	$ 1,782	$ (1,973)	$ 5,156	$ 2,933	$ 6,619	$ 5,159	$ (73,282)	$ 19,867	$ 11,378
Weighted-average number of common shares outstanding
Basic weighted-average common shares outstanding									11,047	10,897	10,695
Dilutive potential common shares									0	229	157
Diluted weighted-average common shares outstanding									11,047	11,126	10,852
(Loss) Earnings Per Share
Basic (in dollars per share)	$ (5.74)	$ (0.86)	$ 0.16	$ (0.18)	$ 0.47	$ 0.27	$ 0.61	$ 0.48	$ (6.63)	$ 1.82	$ 1.06
Diluted (in dollars per share)	$ (5.74)	$ (0.86)	$ 0.16	$ (0.18)	$ 0.46	$ 0.26	$ 0.60	$ 0.46	$ (6.63)	$ 1.79	$ 1.05