Parent Only Condensed Financial Statements - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents	$ 70,278	$ 52,574
Total assets	2,004,096	1,596,755
Liabilities:
Junior subordinated debentures due to subsidiary grantor trust	5,155	5,155
Total liabilities	1,759,075	1,368,627
Shareholders’ equity:
Preferred stock, Series C	0	0
Common stock	79,416	89,379
Retained earnings	150,749	135,932
Accumulated other comprehensive income, net of tax	14,856	2,817
Total shareholders' equity	245,021	228,128	$ 219,738	$ 209,559
Total liabilities and shareholders' equity	2,004,096	1,596,755
Parent Company
ASSETS
Cash and cash equivalents	896	1,675	$ 2,326	$ 3,296
Investment in Bank subsidiary	249,037	231,671
Other assets	354	220
Total assets	250,287	233,566
Liabilities:
Junior subordinated debentures due to subsidiary grantor trust	5,155	5,155
Other liabilities	111	283
Total liabilities	5,266	5,438
Shareholders’ equity:
Common stock	79,416	89,379
Retained earnings	150,749	135,932
Accumulated other comprehensive income, net of tax	14,856	2,817
Total shareholders' equity	245,021	228,128
Total liabilities and shareholders' equity	$ 250,287	$ 233,566