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Loans and Allowance for Loan Losses - Narrative (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Reversal of interest income on nonaccrual loans	$ 26	$ 12
Nonaccrual loans, no allowance	1,300		$ 1,600
Collateral-dependent loans	8,300		8,100
Mortgage Loans in Process of Foreclosure, Amount	0		0
Interest receivable	34,890		49,350
Accrued interest receivable on our loan portfolio	16,700		18,800
Extended Amortization Period
Financing Receivable, Allowance for Credit Loss [Line Items]
Restructured loans	$ 179		$ 897
Commercial Real Estate Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
General Loan Term	20 years
Owner and nonowner-occupied real estate	$ 1,650,000
Loans secured by multi-family properties	313,400
Loans secured by farmland	$ 25,900
Commercial loans | Extended Amortization Period
Financing Receivable, Allowance for Credit Loss [Line Items]
Number of loans modified	1
Restructured loans	$ 179
1-4 Family Residential Real Estate Loans | Minimum
Financing Receivable, Allowance for Credit Loss [Line Items]
General Loan Term	15 years
1-4 Family Residential Real Estate Loans | Maximum
Financing Receivable, Allowance for Credit Loss [Line Items]
General Loan Term	30 years

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