Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock Including Additional Paid in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
BALANCE (in shares) at Dec. 31, 2020	7,248
BALANCE at Dec. 31, 2020	$ 65,971	$ 0	$ 113,534	$ 179,505
Net income			4,492	4,492
Dividends paid on common stock			(1,015)	(1,015)
Repurchase of common stock				0
Stock issued for options exercised, including tax benefits (in shares)	31
Stock issued for options exercised, including tax benefits	$ 607			607
Stock compensation expense (in shares)	2
Stock compensation expense	$ 278			278
BALANCE (in shares) at Mar. 31, 2021	7,281
BALANCE at Mar. 31, 2021	$ 66,856	0	117,011	183,867
BALANCE (in shares) at Dec. 31, 2021	7,302
BALANCE at Dec. 31, 2021	$ 68,061	0	129,794	197,855
Net income			7,339	7,339
Dividends paid on common stock			(1,133)	(1,133)
Repurchase of common stock	$ 0			0
Stock issued for options exercised, including tax benefits (in shares)	7
Stock issued for options exercised, including tax benefits	$ 145			145
Stock compensation expense (in shares)	2
Stock compensation expense	$ 248			248
Repurchase of common stock (in shares)	0
BALANCE (in shares) at Mar. 31, 2022	7,311
BALANCE at Mar. 31, 2022	$ 68,454	$ 0	$ 136,000	$ 204,454