FDIC-Assisted Acquired Loans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Jun. 09, 2017	Apr. 26, 2016	Jun. 20, 2014
Business Acquisition [Line Items]
Goodwill recorded on acquisition date	$ 6,081,000	$ 6,944,000
Team Bank
Business Acquisition [Line Items]
Gross loans receivable	3,613,000	5,393,000
Balance of accretable discount due to change in expected losses	(65,000)	(97,000)
Expected loss remaining		(30,000)
Net carrying value of loans receivable	3,548,000	5,266,000
Goodwill recorded on acquisition date				$ 0
Vantus Bank
Business Acquisition [Line Items]
Gross loans receivable	5,304,000	8,052,000
Balance of accretable discount due to change in expected losses	(19,000)	(35,000)
Expected loss remaining		(13,000)
Net carrying value of loans receivable	5,285,000	8,004,000
Goodwill recorded on acquisition date				0
Sun Security Bank
Business Acquisition [Line Items]
Gross loans receivable	9,405,000	13,395,000
Balance of accretable discount due to change in expected losses	(63,000)	(180,000)
Expected loss remaining		(104,000)
Net carrying value of loans receivable	9,342,000	13,111,000
Goodwill recorded on acquisition date				$ 0
Inter Bank
Business Acquisition [Line Items]
Gross loans receivable	32,645,000	44,215,000
Balance of accretable discount due to change in expected losses	(58,000)	(1,079,000)
Expected loss remaining		(1,079,000)
Net carrying value of loans receivable	32,587,000	42,057,000
Goodwill recorded on acquisition date			$ 0
Valley Bank
Business Acquisition [Line Items]
Gross loans receivable	23,632,000	31,515,000
Balance of accretable discount due to change in expected losses	(224,000)	(612,000)
Expected loss remaining		(699,000)
Net carrying value of loans receivable	$ 23,408,000	$ 30,204,000
Goodwill recorded on acquisition date					$ 0