CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance at Dec. 30, 2017	$ 111,670	$ 14,372	$ 99,908	$ (2,610)
Balance (in shares) at Dec. 30, 2017		14,372
Other comprehensive income (loss)	(92)			(92)
Net income	1,216		1,216
Expense of stock options and restricted stock units	161		161
Exercise of stock options	55	$ 9	46
Exercise of stock options (in shares)		9
Settlement of restricted stock units	0	$ 35	(35)
Settlement of restricted stock units (in shares)		35
Dividends declared	(1,801)		(1,801)
Balance at Mar. 24, 2018	111,209	$ 14,416	99,495	(2,702)
Balance (in shares) at Mar. 24, 2018		14,416
Balance at Dec. 29, 2018	128,321	$ 14,439	113,882	0
Balance (in shares) at Dec. 29, 2018		14,439
Other comprehensive income (loss)	0			0
Net income	267		267
Expense of stock options and restricted stock units	144		144
Exercise of stock options	118	$ 10	108
Exercise of stock options (in shares)		10
Settlement of restricted stock units	0	$ 25	(25)
Settlement of restricted stock units (in shares)		25
Dividends declared	(1,809)		(1,809)
Purchase of stock	(25)	$ (3)	(22)
Purchase of stock (in shares)		(3)
Balance at Mar. 23, 2019	$ 127,016	$ 14,471	$ 112,545	$ 0
Balance (in shares) at Mar. 23, 2019		14,471