Condensed Financial Statements of Parent Company - Condensed Financial Statements of Parent Company (Condensed Statements of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities
NET INCOME	$ 9,134	$ 8,250	$ 6,379	$ 5,077	$ 3,817	$ 3,595	$ 2,416	$ 3,299	$ 28,840	$ 13,127	$ 16,757
Adjustments:
Change in other assets									5,793	2,531	2,707
Change in other liabilities									3,117	1,184	(164)
Net cash provided by (used in) operating activities									(28,278)	(4,851)	18,980
Cash flows from investing activities
Net cash from investing activities									(286,044)	(147,068)	(118,031)
Cash flows from financing activities
Repurchase of common stock									(28)	(8,104)	(5,391)
Cash dividend paid on common stock									(5,132)	(4,262)	(3,151)
Net cash provided by financing activities									323,471	172,286	107,360
Net change in cash and cash equivalents									9,149	20,367	8,309
Cash and cash equivalents at beginning of period				106,310				85,943	106,310	85,943	77,634
Cash and cash equivalents at end of period	115,459				106,310				115,459	106,310	85,943
Parent Company
Cash flows from operating activities
NET INCOME									28,839	13,127	16,757
Adjustments:
Equity in undistributed net loss of bank subsidiary									(29,301)	(13,899)	(17,480)
Change in other assets									(124)	107	6
Change in other liabilities									(414)	359	88
Net cash provided by (used in) operating activities									(1,000)	(306)	(629)
Cash flows from investing activities
Net cash from investing activities									0	0	0
Cash flows from financing activities
Repurchase of common stock									(28)	(8,104)	(5,391)
Cash dividend paid on common stock									(5,132)	(4,262)	(3,151)
Proceeds from subsidiaries									5,123	13,921	11,390
Net cash provided by financing activities									(37)	1,555	2,848
Net change in cash and cash equivalents									(1,037)	1,249	2,219
Cash and cash equivalents at beginning of period				$ 3,468				$ 2,219	3,468	2,219	0
Cash and cash equivalents at end of period	$ 2,431				$ 3,468				$ 2,431	$ 3,468	$ 2,219