Merger Transaction - Schedule of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	Nov. 07, 2019
Business Acquisition [Line Items]
Goodwill	$ 12,901	$ 12,942
Premier Bancsares, Inc.
Business Acquisition [Line Items]
Cash and due from banks			$ 20,063
Securities available for sale			38,813
Loans			184,344
Premises and equipment			7,223
Goodwill			9,428
Intangible assets			4,213
Other real estate			1,595
Other assets			9,480
Total assets acquired			275,159
Deposits			205,078
FHLB borrowings			16,617
Repurchase agreements			6,863
Other liabilities			3,218
Total liabilities assumed			231,776
Net assets acquired			$ 43,383