CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY - UNAUDITED - USD ($) $ in Thousands	Common Stock	Additional Paid-in-Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
Beginning balance at Dec. 31, 2020	$ 45	$ 433,941	$ 247,638	$ 14,087	$ 695,711
Beginning balance (in shares) at Dec. 31, 2020	44,667,650
Net income			48,409		48,409
Other comprehensive income (loss)				(3,312)	(3,312)
Stock based compensation		1,629			1,629
Cash dividend			(8,050)		(8,050)
Exercise of options		819			819
Exercise of options (in shares)	75,807
Stock grants - vesting of restricted stock units (in shares)	117,223
Repurchase of shares from restricted shares vesting		(1,188)			(1,188)
Repurchase of shares from restricted shares vesting (in shares)	(40,937)
Ending balance at Jun. 30, 2021	$ 45	435,201	287,997	10,775	734,018
Ending balance (in shares) at Jun. 30, 2021	44,819,743
Beginning balance at Mar. 31, 2021	$ 45	434,346	265,970	14,069	714,430
Beginning balance (in shares) at Mar. 31, 2021	44,782,155
Net income			26,054		26,054
Other comprehensive income (loss)				(3,294)	(3,294)
Stock based compensation		634			634
Cash dividend			(4,027)		(4,027)
Exercise of options		465			465
Exercise of options (in shares)	28,807
Stock grants - vesting of restricted stock units (in shares)	9,138
Repurchase of shares from restricted shares vesting		(244)			(244)
Repurchase of shares from restricted shares vesting (in shares)	(357)
Ending balance at Jun. 30, 2021	$ 45	435,201	287,997	10,775	734,018
Ending balance (in shares) at Jun. 30, 2021	44,819,743
Beginning balance at Dec. 31, 2021	$ 56	720,744	340,976	2,275	1,064,051
Beginning balance (in shares) at Dec. 31, 2021	56,432,070
Net income			64,152		64,152
Other comprehensive income (loss)				(11,348)	(11,348)
Stock based compensation		2,037			2,037
Cash dividend			(12,424)		(12,424)
Exercise of options		18			18
Exercise of options (in shares)	2,000
Stock grants - vesting of restricted stock units (in shares)	133,374
Repurchase of shares from restricted shares vesting		(1,120)			(1,120)
Repurchase of shares from restricted shares vesting (in shares)	(42,947)
Stock repurchases		(2,457)			(2,457)
Stock repurchases (Shares)	(137,583)
Ending balance at Jun. 30, 2022	$ 56	719,222	392,704	(9,073)	1,102,909
Ending balance (in shares) at Jun. 30, 2022	56,386,914
Beginning balance at Mar. 31, 2022	$ 57	720,846	365,604	(3,932)	1,082,575
Beginning balance (in shares) at Mar. 31, 2022	56,514,168
Net income			33,316		33,316
Other comprehensive income (loss)				(5,141)	(5,141)
Stock based compensation		833			833
Cash dividend			(6,216)		(6,216)
Stock grants - vesting of restricted stock units	$ (1)				(1)
Stock grants - vesting of restricted stock units (in shares)	10,674
Repurchase of shares from restricted shares vesting (in shares)	(345)
Stock repurchases		(2,457)			(2,457)
Stock repurchases (Shares)	(137,583)
Ending balance at Jun. 30, 2022	$ 56	$ 719,222	$ 392,704	$ (9,073)	$ 1,102,909
Ending balance (in shares) at Jun. 30, 2022	56,386,914