Business Combinations - Narrative (Details)		12 Months Ended
	May 01, 2019 USD ($) bank $ / shares shares	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Business Acquisition [Line Items]
Cash consideration paid		$ 0	$ 467,000
Amount of Goodwill Resulting from Acquisition		$ 15,992,000	$ 16,477,000
LBC Bancshares, Inc
Business Acquisition [Line Items]
Number of bank locations acquired | bank	2
Cash price (in dollars per share) | $ / shares	$ 23.50
Price per share (in shares) | shares	1.3239
Percentage of common stock received	55.00%
Percentage of cash consideration received	45.00%
Percentage of merger consideration paid in company stock	50.00%
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares	1,053,875
Fair value of shares issued	$ 18,221,000
Cash consideration paid	15,315,000
Amount of Goodwill Resulting from Acquisition	15,249,000
Loans purchased	130,568,000
Discount on loans	$ 2,200,000
Percentage of discount on loans	1.63%
Fair value of acquired loans at acquisition date	$ 176,000
LBC Bancshares, Inc | LaGrange, Georgia
Business Acquisition [Line Items]
Number of bank locations acquired | bank	1
LBC Bancshares, Inc | Columbus, Georgia
Business Acquisition [Line Items]
Number of bank locations acquired | bank	1
PFB Mortgage
Business Acquisition [Line Items]
Cash consideration paid	$ 833,000
Amount of Goodwill Resulting from Acquisition	$ 541,000