CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2020		55,243,000
Beginning balance at Dec. 31, 2020	$ 1,130,402	$ 5,524	$ 856,092	$ 256,701	$ (8,285)	$ 20,370
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	97,039			124,403		(27,364)
Stock based compensation expense (in shares)		23,000
Stock based compensation expense	8,685		8,685
Common stock issued for stock based employee benefit plans (in shares)		167,000
Common stock issued for stock based employee benefit plans	(2,314)	$ 19	(49)		(2,284)
Common stock issued for stock options (in shares)		384,000
Common stock issued for stock options	7,336	$ 38	7,298
Issuance of common stock, pursuant to acquisition (in shares)		2,687,000
Issuance of common stock, pursuant to acquisition	86,487	$ 269	86,218
Conversion of options, pursuant to acquisition	5,607		5,607
Dividends on common stock	(22,506)			(22,506)
Ending balance (in shares) at Dec. 31, 2021		58,504,000
Ending balance at Dec. 31, 2021	1,310,736	$ 5,850	963,851	358,598	(10,569)	(6,994)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	(74,532)			106,507		(181,039)
Stock based compensation expense (in shares)		21,000
Stock based compensation expense	11,155		11,155
Common stock issued for stock based employee benefit plans (in shares)		367,000
Common stock issued for stock based employee benefit plans	(2,507)	$ 40	(97)		(2,450)
Common stock issued for stock options (in shares)		522,000
Common stock issued for stock options	5,916	$ 52	5,864
Issuance of common stock, pursuant to acquisition (in shares)		12,204,000
Issuance of common stock, pursuant to acquisition	397,236	$ 1,220	396,016
Conversion of options, pursuant to acquisition	1,013		1,013
Dividends on common stock	$ (41,242)			(41,242)
Ending balance (in shares) at Dec. 31, 2022	71,617,852	71,618,000
Ending balance at Dec. 31, 2022	$ 1,607,775	$ 7,162	1,377,802	423,863	(13,019)	(188,033)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	132,188			104,033		28,155
Stock based compensation expense (in shares)		30,000
Stock based compensation expense	13,440		13,440
Common stock issued for stock based employee benefit plans (in shares)		970,000
Common stock issued for stock based employee benefit plans	5,100	$ 100	8,691		(3,691)
Issuance of common stock, pursuant to acquisition (in shares)		12,792,000
Issuance of common stock, pursuant to acquisition	410,738	$ 1,279	409,459
Conversion of options, pursuant to acquisition	10,304		10,304
Repurchase of common stock (in shares)		(549,000)
Repurchase of common stock	(10,868)	$ (55)	(10,813)
Dividends on common stock	$ (60,591)			(60,591)
Ending balance (in shares) at Dec. 31, 2023	84,861,498	84,861,000
Ending balance at Dec. 31, 2023	$ 2,108,086	$ 8,486	$ 1,808,883	$ 467,305	$ (16,710)	$ (159,878)