UNAUDITED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Shares [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss)/Income [Member]	Total
Balance at Dec. 31, 2020	$ 8	$ 77,516	$ 333,070	$ 13,071	$ 423,665
Balance (in shares) at Dec. 31, 2020	789,646
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	50,368	0	50,368
Other comprehensive loss, net of tax	0	0	0	(13,927)	(13,927)
Cash dividends declared	0	0	(5,922)	0	(5,922)
Cash dividends returned	0	0	7	0	7
Balance at Sep. 30, 2021	$ 8	77,516	377,523	(856)	454,191
Balance (in shares) at Sep. 30, 2021	789,646
Balance at Jun. 30, 2021	$ 8	77,516	360,021	814	438,359
Balance (in shares) at Jun. 30, 2021	789,646
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	17,502	0	17,502
Other comprehensive loss, net of tax	0	0	0	(1,670)	(1,670)
Balance at Sep. 30, 2021	$ 8	77,516	377,523	(856)	454,191
Balance (in shares) at Sep. 30, 2021	789,646
Balance at Dec. 31, 2021	$ 8	77,516	387,331	(1,719)	$ 463,136
Balance (in shares) at Dec. 31, 2021	789,646				789,646
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	55,037	0	$ 55,037
Other comprehensive loss, net of tax	0	0	0	(25,980)	(25,980)
Cash dividends declared	0	0	(6,110)	0	(6,110)
Repurchase of common stock	$ 0	(17,905)	0	0	(17,905)
Repurchase of common stock (in shares)	(18,824)
Balance at Sep. 30, 2022	$ 8	59,611	436,258	(27,699)	$ 468,178
Balance (in shares) at Sep. 30, 2022	770,822				770,822
Balance at Jun. 30, 2022	$ 8	65,671	416,722	(21,048)	$ 461,353
Balance (in shares) at Jun. 30, 2022	777,190
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	19,536	0	19,536
Other comprehensive loss, net of tax	0	0	0	(6,651)	(6,651)
Repurchase of common stock	$ 0	(6,060)	0	0	(6,060)
Repurchase of common stock (in shares)	(6,368)
Balance at Sep. 30, 2022	$ 8	$ 59,611	$ 436,258	$ (27,699)	$ 468,178
Balance (in shares) at Sep. 30, 2022	770,822				770,822