CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Total
Balance at beginning of the period at Dec. 30, 2017	$ 815	$ 219,095	$ (296,184)	$ 43	$ (76,231)
Balance at beginning of the period (shares) at Dec. 30, 2017	81,535
Increase (decrease) in stockholders equity
Stock-based compensation		3,010			3,010
Exercise of options		53			53
Exercise of options (shares)	11
Shares withheld related to net share settlement of stock-based compensation		(57)			(57)
Shares withheld related to net share settlement of stock-based compensation (in shares)	(2)
Repurchase of Company stock	$ (4)	(1,963)			(1,967)
Repurchase of Company stock (shares)	(397)
Dividends			(511)		(511)
Other comprehensive loss				(5)	(5)
Net income (loss)			(3,261)		(3,261)
Balance at end of the period at Mar. 31, 2018	$ 811	220,138	(299,956)	38	(78,969)
Balance at end of the period (shares) at Mar. 31, 2018	81,147
Balance at beginning of the period at Dec. 29, 2018	$ 842	268,327	(240,104)	(94)	28,971
Balance at beginning of the period (shares) at Dec. 29, 2018	84,196
Increase (decrease) in stockholders equity
Stock-based compensation		4,005			4,005
Adoption of new accounting standard			500		500
Dividends			(159)		(159)
Other comprehensive loss				(13)	(13)
Net income (loss)			2,167		2,167
Balance at end of the period at Mar. 30, 2019	$ 842	$ 272,332	$ (237,596)	$ (107)	$ 35,471
Balance at end of the period (shares) at Mar. 30, 2019	84,196