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
Net income			$ 2,442	$ 2,442
Dividends paid on common stock			(1,023)	(1,023)
Repurchase of common stock (in shares)	0
Repurchase of common stock				0
Stock issued for options exercised, including tax benefits (in shares)	0
Stock issued for options exercised, including tax benefits				0
Stock compensation expense (in shares)	3
Stock compensation expense	$ 195			195
BALANCE (in shares) at Mar. 31, 2020	7,309
BALANCE at Mar. 31, 2020	$ 67,195	$ 0	96,821	164,016
BALANCE (in shares) at Jun. 30, 2020	7,312
BALANCE at Jun. 30, 2020	$ 67,390	0	98,240	165,630
Net income			4,492	4,492
Dividends paid on common stock			(1,015)	(1,015)
Repurchase of common stock (in shares)	0
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 Dec. 31, 2020	7,248
BALANCE at Dec. 31, 2020	$ 65,971	0	113,534	179,505
BALANCE (in shares) at Mar. 31, 2021	7,281
BALANCE at Mar. 31, 2021	$ 66,856	0	117,011	183,867
Net income				8,386
BALANCE (in shares) at Dec. 31, 2020	7,248
BALANCE at Dec. 31, 2020	$ 65,971	0	113,534	179,505
BALANCE (in shares) at Jun. 30, 2021	7,283
BALANCE at Jun. 30, 2021	$ 67,210	0	119,886	187,096
Net income			3,895	3,895
Dividends paid on common stock			(1,020)	(1,020)
Repurchase of common stock (in shares)	0
Repurchase of common stock				0
Stock issued for options exercised, including tax benefits (in shares)	1
Stock issued for options exercised, including tax benefits	$ 24			24
Stock compensation expense (in shares)	1
Stock compensation expense	$ 330			330
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 Jun. 30, 2021	7,283
BALANCE at Jun. 30, 2021	$ 67,210	$ 0	$ 119,886	$ 187,096