Consolidated Statements of Changes in Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands		Common stock	Retained earnings	Accumulated other comprehensive income (loss)	Treasury stock	Total
Beginning Balance (in shares) at Dec. 31, 2019		10,881
Beginning balance at Dec. 31, 2019		$ 90,113	$ 70,442	$ 154		$ 160,709
Increase (Decrease) in Stockholders' Equity
Net income			23,644			23,644
Other comprehensive income, net of tax				(1,343)		(1,343)
Dividends on common stock		$ 119	(3,417)			(3,298)
Common stock issued & related tax effects (in shares)	[1]	80
Common stock issued & related tax effects (1)	[1]	$ 1,641				1,641
Acquisition of treasury stock, at cost (in shares)		(505)
Acquisition of treasury stock, at cost					$ (7,442)	(7,442)
Ending Balance (in shares) at Dec. 31, 2020		10,456
Ending balance at Dec. 31, 2020		$ 91,873	90,669	(1,189)	(7,442)	173,911
Increase (Decrease) in Stockholders' Equity
Net income			36,119			36,119
Other comprehensive income, net of tax				1,511		1,511
Dividends on common stock		$ 134	(3,751)			(3,617)
Common stock issued & related tax effects (in shares)	[1]	134
Common stock issued & related tax effects (1)	[1]	$ 1,996				1,996
Acquisition of treasury stock, at cost (in shares)		(199)
Acquisition of treasury stock, at cost					(4,191)	$ (4,191)
Ending Balance (in shares) at Dec. 31, 2021		10,391				10,391
Ending balance at Dec. 31, 2021		$ 94,003	123,037	322	(11,633)	$ 205,729
Increase (Decrease) in Stockholders' Equity
Net income			38,457			38,457
Other comprehensive income, net of tax				(3,582)		(3,582)
Dividends on common stock		$ 163	(4,536)			(4,373)
Common stock issued & related tax effects (in shares)	[1]	195
Common stock issued & related tax effects (1)	[1]	$ 3,038				3,038
Acquisition of treasury stock, at cost (in shares)		(2)
Acquisition of treasury stock, at cost					(42)	$ (42)
Ending Balance (in shares) at Dec. 31, 2022		10,584				10,584
Ending balance at Dec. 31, 2022		$ 97,204	$ 156,958	$ (3,260)	$ (11,675)	$ 239,227

[1] Includes the issuance of common stock under employee benefit plans, which includes nonqualified stock options and restricted stock expense related entries, employee option exercises and the tax benefit of options exercised.