Stock-Based Compensation - Summary of Stock Options Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 26, 2019	Mar. 27, 2018
Shares
Options outstanding, Beginning balance (in shares)	453,250
Granted (in shares)	5,000
Exercised (in shares)	(1,500)
Forfeited (in shares)	(500)
Options outstanding, Ending balance (in shares)	456,250
Options exercisable (in shares)	187,746
Options exercisable and expected to vest (in shares)	414,532
Weighted Average Exercise Price
Weighted Average Exercise Price, Options outstanding, Beginning balance (in dollars per share)	$ 11.74
Weighted Average Exercise Price, Granted (in dollars per share)	10.43
Weighted Average Exercise Price, Exercised (in dollars per share)	10.40
Weighted Average Exercise Price, Forfeited (in dollars per share)	10.40
Weighted Average Exercise Price, Options outstanding, Ending balance (in dollars per share)	11.73
Weighted Average Exercise Price, Options exercisable (in dollars per share)	10.59
Weighted Average Exercise Price, Options exercisable and expected (in dollars per share)	$ 11.59
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted Average Remaining Contractual Term, Options outstanding (in years)	4 years 9 months 4 days	5 years
Weighted Average Remaining Contractual Term, Options exercisable (in years)	4 years 11 days
Weighted Average Remaining Contractual Term, Options exercisable and expected to vest (in years)	4 years 8 months 1 day
Aggregate Intrinsic Value, Options outstanding, Beginning balance	$ 77
Aggregate Intrinsic Value, Options outstanding, Ending balance	86
Aggregate Intrinsic Value, Options exercisable	43
Aggregate Intrinsic Value, Options excersiable and expected to vest	$ 81