Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Beginning balance, value at Dec. 31, 2019	$ 6,509	$ (12,601)	$ 2,380	$ 46,963	$ 43,251
Beginning balance, shares at Dec. 31, 2019	17,274	(1,564)
Cumulative impact of change in accounting principles, net of tax
Treasury stock purchased		$ (405)			(405)
Treasury stock purchased, shares		(179)
Issuance of common stock in connection with stock-based compensation		$ 556	(62)		494
Issuance of common stock in connection with stock-based compensation, shares		74
Stock-based compensation			282		282
Net Income				3,232	3,232
Ending balance, value at Dec. 31, 2020	$ 6,509	$ (12,450)	2,600	50,195	46,854
Ending balance, shares at Dec. 31, 2020	17,274	(1,669)
Treasury stock purchased		$ (1,583)			(1,583)
Treasury stock purchased, shares		(250)
Issuance of common stock in connection with stock-based compensation		$ 597	(721)		(124)
Issuance of common stock in connection with stock-based compensation, shares		80
Stock-based compensation			673		673
Net Income				3,311	3,311
Ending balance, value at Dec. 31, 2021	$ 6,509	$ (13,436)	$ 2,552	$ 53,506	$ 49,131
Ending balance, shares at Dec. 31, 2021	17,274	(1,839)