Loans and Allowance for Credit Losses - Troubled Debt Restructurings, Excluding Loans Acquired, Segregated by Class of Loans (Details) $ in Thousands	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($) loan	Sep. 30, 2022 USD ($) loan	Sep. 30, 2021 loan	Dec. 31, 2021 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications	3	4	1
Loans, Excluding Acquired Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications		40		49
Troubled debt, balance | $	$ 4,896	$ 4,896		$ 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 | $	1,869	$ 1,869		$ 4,289
Loans, Excluding Acquired Loans | Nonaccrual TDR Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications		15		18
Troubled debt, balance | $	$ 3,027	$ 3,027		$ 2,650
Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications	3	4	1
Real Estate | Loans, Excluding Acquired Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications		37		45
Troubled debt, balance | $	$ 3,545	$ 3,545		$ 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 | $	1,869	$ 1,869		$ 3,853
Real Estate | Loans, Excluding Acquired Loans | Nonaccrual TDR Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications		12		16
Troubled debt, balance | $	1,676	$ 1,676		$ 1,244
Real Estate | Single family residential | Loans, Excluding Acquired Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications		36		42
Troubled debt, balance | $	3,544	$ 3,544		$ 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 | $	1,868	$ 1,868		$ 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		12		14
Troubled debt, balance | $	$ 1,676	$ 1,676		$ 1,196
Real Estate | Other commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications	3	4	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 | $	$ 1	$ 1		$ 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 | $	1	$ 1		$ 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 | $	1,351	$ 1,351		$ 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 | $	1,351	$ 1,351		$ 1,406
Commercial | Commercial | Loans, Excluding Acquired Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loan modifications		3		4
Troubled debt, balance | $	1,351	$ 1,351		$ 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 | $	$ 1,351	$ 1,351		$ 1,406