Consolidated Statements of Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balances (in shares) at Dec. 31, 2018	26,117,045
Balance at Dec. 31, 2018	$ 5,102	$ 2,539	$ 308,914	$ (23,423)	$ 293,132
Net income			35,815		35,815
Other comprehensive income (loss)				(5,114)	(5,114)
Stock based compensation, net (in shares)	19,836
Stock based compensation, net	$ 4	948	73		1,025
Treasury share repurchases (in shares)	(69,379)
Treasury share repurchases	$ (15)	(2,340)	(255)		(2,610)
Cash dividends			(14,370)		(14,370)
Balances (in shares) at Dec. 31, 2019	26,067,502
Balance at Dec. 31, 2019	$ 5,091	1,147	330,177	(28,537)	307,878
Net income			25,188		25,188
Other comprehensive income (loss)				(1,840)	(1,840)
Stock based compensation, net (in shares)	45,338
Stock based compensation, net	$ 10	(135)	167		42
Treasury share repurchases (in shares)	(10,848)
Treasury share repurchases	$ (2)	(319)	(40)		(361)
Cash dividends			(15,394)		(15,394)
Balances (in shares) at Dec. 31, 2020	26,101,992
Balance at Dec. 31, 2020	$ 5,099	693	340,098	(30,377)	315,513
Net income			29,851		29,851
Other comprehensive income (loss)				47	47
Stock based compensation, net (in shares)	31,707
Stock based compensation, net	$ 7	2,273	116		2,396
Treasury share repurchases (in shares)	(30,038)
Treasury share repurchases	$ (7)	(1,128)	(110)		(1,245)
Cash dividends			(16,586)		(16,586)
Balances (in shares) at Dec. 31, 2021	26,103,661
Balance at Dec. 31, 2021	$ 5,099	$ 1,838	$ 353,369	$ (30,330)	$ 329,976