Stock Based Compensation - Summary of Activity in Stock Option Plan (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Apr. 02, 2016 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Outstanding, Number of Shares, Beginning Balance | shares	551,492
Number of Shares, Options Granted | shares	26,100
Number of Shares, Options Exercised | shares	(53,500)
Number of Shares, Options Cancelled or forfeited | shares	(13,334)
Outstanding, Number of Shares, Ending Balance | shares	510,758
Weighted Average Exercise Price Per Share, Beginning Balance | $ / shares	$ 6.92
Weighted Average Exercise Price Per Share, Options Granted | $ / shares	10.33
Weighted Average Exercise Price Per Share, Options Exercised | $ / shares	4.59
Weighted Average Exercise Price Per Share, Options Cancelled or forfeited | $ / shares	10.18
Weighted Average Exercise Price Per Share, Ending Balance | $ / shares	$ 7.25
Aggregate Intrinsic Value, Ending Balance | $	$ 1,477