Condensed Financial Information of Parent Company - Schedule of Condensed Statement of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Income Statements, Captions [Line Items]
Net interest income after (release of) provision for credit losses	$ 44,456	$ 44,515	$ 47,166
Gain on sales of investment securities	51	1,075	19
Total net revenue	154,147	144,956	157,235
Expenses:
Salaries and employee benefits	92,155	88,062	91,083
Other operating	16,743	15,387	18,065
Total operating expense	120,326	114,615	119,769
Income before income tax expense	33,821	30,341	37,466
Income tax expense	5,217	5,165	7,062
Net income	28,604	25,176	30,404
Parent Company
Condensed Income Statements, Captions [Line Items]
Income from subsidiaries – management fees	3,115	2,854	2,599
Information services revenue	104,426	95,078	106,198
Net interest income after (release of) provision for credit losses	11,316	10,932	15,713
Gain on sales of investment securities	51	1,075	19
Other income	919	458	518
Total net revenue	119,827	110,397	125,047
Expenses:
Salaries and employee benefits	80,434	77,577	81,432
Other operating	27,406	25,347	26,136
Total operating expense	107,840	102,924	107,568
Income before income tax expense	11,987	7,473	17,479
Income tax expense	635	340	2,860
Income before undistributed income of subsidiaries	11,352	7,133	14,619
Equity in undistributed income of subsidiaries	17,252	18,043	15,785
Net income	$ 28,604	$ 25,176	$ 30,404