Loans and Allowance for Credit Losses - Troubled Debt Restructurings, Excluding Loans Acquired, Segregated by Class of Loans (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($) loan	Jun. 30, 2021 loan	Jun. 30, 2022 USD ($) loan	Jun. 30, 2021 loan	Dec. 31, 2021 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications	1	1	1	1
Loans, Excluding Acquired Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			41		49
Troubled debt, balance | $	$ 5,178		$ 5,178		$ 6,939
Loans, Excluding Acquired Loans | Accruing TDR Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			25		31
Troubled debt, balance | $	2,655		$ 2,655		$ 4,289
Loans, Excluding Acquired Loans | Nonaccrual TDR Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			16		18
Troubled debt, balance | $	$ 2,523		$ 2,523		$ 2,650
Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications	1	1	1	1
Real Estate | Loans, Excluding Acquired Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			38		45
Troubled debt, balance | $	$ 3,777		$ 3,777		$ 5,097
Real Estate | Loans, Excluding Acquired Loans | Accruing TDR Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			25		29
Troubled debt, balance | $	2,655		$ 2,655		$ 3,853
Real Estate | Loans, Excluding Acquired Loans | Nonaccrual TDR Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			13		16
Troubled debt, balance | $	1,122		$ 1,122		$ 1,244
Real Estate | Single family residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications		1		1
Real Estate | Single family residential | Loans, Excluding Acquired Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			37		42
Troubled debt, balance | $	3,024		$ 3,024		$ 4,283
Real Estate | Single family residential | Loans, Excluding Acquired Loans | Accruing TDR Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			24		28
Troubled debt, balance | $	1,902		$ 1,902		$ 3,087
Real Estate | Single family residential | Loans, Excluding Acquired Loans | Nonaccrual TDR Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			13		14
Troubled debt, balance | $	$ 1,122		$ 1,122		$ 1,196
Real Estate | Other commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications	1		1
Real Estate | Other commercial | Loans, Excluding Acquired Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			1		3
Troubled debt, balance | $	$ 753		$ 753		$ 814
Real Estate | Other commercial | Loans, Excluding Acquired Loans | Accruing TDR Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			1		1
Troubled debt, balance | $	753		$ 753		$ 766
Real Estate | Other commercial | Loans, Excluding Acquired Loans | Nonaccrual TDR Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			0		2
Troubled debt, balance | $	0		$ 0		$ 48
Commercial | Loans, Excluding Acquired Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			3		4
Troubled debt, balance | $	1,401		$ 1,401		$ 1,842
Commercial | Loans, Excluding Acquired Loans | Accruing TDR Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			0		2
Troubled debt, balance | $	0		$ 0		$ 436
Commercial | Loans, Excluding Acquired Loans | Nonaccrual TDR Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			3		2
Troubled debt, balance | $	1,401		$ 1,401		$ 1,406
Commercial | Commercial | Loans, Excluding Acquired Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			3		4
Troubled debt, balance | $	1,401		$ 1,401		$ 1,842
Commercial | Commercial | Loans, Excluding Acquired Loans | Accruing TDR Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			0		2
Troubled debt, balance | $	0		$ 0		$ 436
Commercial | Commercial | Loans, Excluding Acquired Loans | Nonaccrual TDR Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications			3		2
Troubled debt, balance | $	$ 1,401		$ 1,401		$ 1,406