CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid In Capital	Retained Earnings	Treasury Stock	Accumulated  Other Comprehensive Income (Loss)
BEGINNING BALANCE (in shares) at Dec. 31, 2020		33,141,879
BEGINNING BALANCE at Dec. 31, 2020	$ 319,182	$ 331	$ 199,847	$ 269,420		$ (8,763)
BEGINING BALANCE, Treasury Stock (in shares) at Dec. 31, 2020					(3,518,607)
BEGINING BALANCE, Treasury Stock at Dec. 31, 2020					$ (141,653)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	17,291			17,291
Issuance of common stock awards to employees (in shares)		66,203
Issuance of common stock awards to employees	0	$ 0
Surrender of common stock awards (in shares)					(274)
Surrender of common stock awards	0				$ 0
Share-based compensation expense	2,713		2,713
Share-based compensation issued to directors	102		102
Dividends declared	$ (8,907)			(8,907)
Common stock repurchase (in shares)	0
Other comprehensive income (loss), net of tax	$ 10,157					10,157
ENDING BALANCE (in shares) at Mar. 31, 2021		33,208,082
ENDING BALANCE at Mar. 31, 2021	$ 340,538	$ 331	202,662	277,804		1,394
ENDING BALANCE, Treasury Stock (in shares) at Mar. 31, 2021					(3,518,881)
ENDING BALANCE, Treasury Stock at Mar. 31, 2021					$ (141,653)
BEGINNING BALANCE (in shares) at Dec. 31, 2021	33,271,659	33,271,659
BEGINNING BALANCE at Dec. 31, 2021	$ 416,840	$ 333	211,430	352,543		(227)
BEGINING BALANCE, Treasury Stock (in shares) at Dec. 31, 2021	(3,565,258)				(3,565,258)
BEGINING BALANCE, Treasury Stock at Dec. 31, 2021	$ (147,239)				$ (147,239)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	33,822			33,822
Issuance of common stock awards to employees (in shares)		40,980
Issuance of common stock awards to employees	0	$ 1	(1)
Surrender of common stock awards (in shares)					(50)
Surrender of common stock awards	0				$ 0
Share-based compensation expense	3,089		3,089
Share-based compensation issued to directors	124		124
Issuance of awards previously classified as liability awards (in shares)		39,204
Issuance of awards previously classified as liability awards	4,000		4,000
Dividends declared	$ (35,890)			(35,890)
Common stock repurchase (in shares)	(511,000)				(510,943)
Common stock repurchase	$ (49,865)				$ (49,865)
Other comprehensive income (loss), net of tax	$ 18,111					18,111
ENDING BALANCE (in shares) at Mar. 31, 2022	33,351,843	33,351,843
ENDING BALANCE at Mar. 31, 2022	$ 390,231	$ 334	$ 218,642	$ 350,475		$ 17,884
ENDING BALANCE, Treasury Stock (in shares) at Mar. 31, 2022	(4,076,251)				(4,076,251)
ENDING BALANCE, Treasury Stock at Mar. 31, 2022	$ (197,104)				$ (197,104)