CONSOLIDATED CONDENSED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Retained Earnings	Total
Balance at Dec. 29, 2018	$ 14,439	$ 113,882	$ 128,321
Balance (in shares) at Dec. 29, 2018	14,439
Net income		4,683	4,683
Expense of stock options and restricted stock units		409	409
Exercise of stock options	$ 10	108	118
Exercise of stock options (in shares)	10
Settlement of restricted stock units	$ 25	(25)
Settlement of restricted stock units (in shares)	25
Dividends declared		(5,423)	(5,423)
Purchase of stock	$ (192)	(1,891)	(2,083)
Purchase of stock (in shares)	(192)
Stock issued to directors as compensation	$ 9	93	102
Stock issued to directors as compensation (in shares)	9
Balance at Oct. 05, 2019	$ 14,291	111,836	126,127
Balance (in shares) at Oct. 05, 2019	14,291
Balance at Jul. 13, 2019	$ 14,468	112,775	127,243
Balance (in shares) at Jul. 13, 2019	14,468
Net income		2,540	2,540
Expense of stock options and restricted stock units		68	68
Dividends declared		(1,805)	(1,805)
Purchase of stock	$ (177)	(1,742)	(1,919)
Purchase of stock (in shares)	(177)
Balance at Oct. 05, 2019	$ 14,291	111,836	126,127
Balance (in shares) at Oct. 05, 2019	14,291
Balance at Dec. 28, 2019	$ 14,215	111,955	126,170
Balance (in shares) at Dec. 28, 2019	14,215
Net income		20,847	20,847
Expense of stock options and restricted stock units		756	756
Settlement of restricted stock units	$ 51	(51)
Settlement of restricted stock units (in shares)	51
Issuance of restricted stock awards	$ 35	(35)
Issuance of restricted stock awards (in shares)	35
Dividends declared		(5,515)	(5,515)
Purchase of stock	$ (142)	(1,184)	(1,326)
Purchase of stock (in shares)	(142)
Stock issued to directors as compensation	$ 10	87	97
Stock issued to directors as compensation (in shares)	10
Balance at Oct. 03, 2020	$ 14,169	126,860	141,029
Balance (in shares) at Oct. 03, 2020	14,169
Balance at Jul. 11, 2020	$ 14,154	118,410	132,564
Balance (in shares) at Jul. 11, 2020	14,154
Net income		10,186	10,186
Expense of stock options and restricted stock units		263	263
Settlement of restricted stock units	$ 15	(15)
Settlement of restricted stock units (in shares)	15
Dividends declared		(1,984)	(1,984)
Balance at Oct. 03, 2020	$ 14,169	$ 126,860	$ 141,029
Balance (in shares) at Oct. 03, 2020	14,169