Consolidated Statement of Shareholders' Equity - USD ($) $ 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, 2019		7,355,000
BALANCE at Dec. 31, 2019		$ 67,993	$ 0	$ 96,663	$ 164,656
Net income				20,964	20,964
Dividends paid on common stock				(4,093)	(4,093)
Repurchase of common stock (in shares)		(129,000)
Repurchase of common stock		$ (2,938)			(2,938)
Stock issued for options exercised, including tax benefits (in shares)		8,000
Stock issued for options exercised, including tax benefits		$ 136			136
Stock compensation expense (in shares)		14,000
Stock compensation expense		$ 780			780
BALANCE (in shares) at Dec. 31, 2020		7,248,000
BALANCE at Dec. 31, 2020		$ 65,971	0	113,534	179,505
Net income				20,559	20,559
Dividends paid on common stock				(4,299)	(4,299)
Repurchase of common stock					0
Stock issued for options exercised, including tax benefits (in shares)		47,000
Stock issued for options exercised, including tax benefits		$ 825			825
Stock compensation expense (in shares)		7,000
Stock compensation expense		$ 1,265			1,265
BALANCE (in shares) at Dec. 31, 2021		7,302,000
BALANCE at Dec. 31, 2021		$ 68,061	0	129,794	197,855
Net income				20,465	20,465
Dividends paid on common stock	[1]			(4,538)	(4,538)
Repurchase of common stock					$ 0
Stock issued for options exercised, including tax benefits (in shares)		26,000			26,050
Stock issued for options exercised, including tax benefits		$ 461		0	$ 461
Stock compensation expense (in shares)		11,000
Stock compensation expense		$ 1,230		0	1,230
BALANCE (in shares) at Dec. 31, 2022		7,339,000
BALANCE at Dec. 31, 2022		$ 69,752	$ 0	$ 145,721	$ 215,473

[1] Quarterly dividend was increased from $0.14 per share to $0.155 per share in the third quarter of 2021.