CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Income	Accumulated Deficit
Beginning balance at Dec. 30, 2017	$ 82,663	$ 22	$ 177,521	$ (28,489)	$ 490	$ (66,881)
Beginning Balance (in shares) at Dec. 30, 2017		21,811,000		4,845,000
Shares issued in connection with:
Exercise of stock options (in shares)		323,000
Exercise of stock options	$ 1,573		1,573
Settlement of RSUs (in shares)		434,000
Employee stock purchase plan (in shares)	411,000	411,000
Employee stock purchase plan	$ 1,635	$ 1	1,634
Shares withheld in connection with net share settlement of RSUs (in shares)		(159,000)
Shares withheld in connection with net share settlement of RSUs	(831)		(831)
Equity-based compensation expense	3,307		3,307
Net income	3,581					3,581
Other comprehensive income (loss)	(112)				(112)
Common stock repurchases	$ (558)			$ (558)
Common Stock Repurchases (in shares)	120,000	(120,000)		120,000
Ending balance at Dec. 29, 2018	$ 89,624	$ 23	183,204	$ (29,047)	378	(64,934)
Ending Balance (in shares) at Dec. 29, 2018		22,700,000		4,965,000
Cumulative effect of accounting change	$ (1,634)					(1,634)
Shares issued in connection with:
Exercise of stock options (in shares)	175,371	175,000
Exercise of stock options	$ 799		799
Settlement of RSUs (in shares)		199,000
Employee stock purchase plan (in shares)	370,000	370,000
Employee stock purchase plan	$ 1,466		1,466
Shares withheld in connection with net share settlement of RSUs (in shares)		(74,000)
Shares withheld in connection with net share settlement of RSUs	(404)		(404)
Equity-based compensation expense	3,225		3,225
Net income	1,148					1,148
Other comprehensive income (loss)	46				46
Common stock repurchases	$ (111)			$ (111)
Common Stock Repurchases (in shares)	24,000	(24,000)		24,000
Ending balance at Dec. 28, 2019	$ 95,793	$ 23	$ 188,290	$ (29,158)	$ 424	$ (63,786)
Ending Balance (in shares) at Dec. 28, 2019		23,346,000		4,989,000