Fair Value Measurements - Schedule of Estimated Fair Values (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Financial assets:
Investment securities available for sale	$ 652,150		$ 677,029
Marketable equity securities	10,615		10,740
Investment securities held to maturity	32,233		32,639
Mortgage servicing rights
Financial assets:
Servicing rights	19,396	$ 18,248	18,635	$ 17,709	$ 16,301	$ 13,724
Commercial servicing rights
Financial assets:
Servicing rights	2,118		2,129
Interest rate swaps
Financial assets:
Derivative assets	17,872		14,178
Financial liabilities:
Derivative liabilities	15,797		12,725
Retail interest rate contracts
Financial assets:
Derivative assets	145
Financial liabilities:
Derivative liabilities			3
Interest rate lock commitments
Financial assets:
Derivative assets	518		440
Level 1 inputs:
Financial assets:
Investment securities available for sale	327,468		356,837
Marketable equity securities	10,615		10,740
Level 1 inputs: | Mortgage servicing rights
Financial assets:
Servicing rights	0		0
Level 1 inputs: | Commercial servicing rights
Financial assets:
Servicing rights	0		0
Level 1 inputs: | Interest rate swaps
Financial assets:
Derivative assets	0		0
Financial liabilities:
Derivative liabilities	0		0
Level 1 inputs: | Retail interest rate contracts
Financial assets:
Derivative assets	0
Financial liabilities:
Derivative liabilities			0
Level 1 inputs: | Interest rate lock commitments
Financial assets:
Derivative assets	0		0
Level 1 inputs: | Carrying Amount
Financial assets:
Cash, due from banks and deposits in other banks	111,228		259,350
Investment securities available for sale	327,468		356,837
Marketable equity securities	10,615		10,740
Level 1 inputs: | Fair Value
Financial assets:
Cash, due from banks and deposits in other banks	111,228		259,350
Investment securities available for sale	327,468		356,837
Marketable equity securities	10,615		10,740
Level 2 inputs:
Financial assets:
Investment securities available for sale	324,682		320,192
Marketable equity securities	0		0
Level 2 inputs: | Mortgage servicing rights
Financial assets:
Servicing rights	0		0
Level 2 inputs: | Commercial servicing rights
Financial assets:
Servicing rights	0		0
Level 2 inputs: | Interest rate swaps
Financial assets:
Derivative assets	17,872		14,178
Financial liabilities:
Derivative liabilities	15,797		12,725
Level 2 inputs: | Retail interest rate contracts
Financial assets:
Derivative assets	145
Financial liabilities:
Derivative liabilities			3
Level 2 inputs: | Interest rate lock commitments
Financial assets:
Derivative assets	0		0
Level 2 inputs: | Carrying Amount
Financial assets:
Investment securities available for sale	324,682		320,192
Investment in Federal Home Loan Bank stock	6,334		3,816
Loans held for sale	63,151		27,538
Financial liabilities:
Deposits	2,427,930		2,387,211
Borrowings	63,781		14,095
Level 2 inputs: | Carrying Amount | Interest rate swaps
Financial assets:
Derivative assets	17,279		14,179
Financial liabilities:
Derivative liabilities	15,797		12,725
Level 2 inputs: | Carrying Amount | Retail interest rate contracts
Financial assets:
Derivative assets	145		0
Financial liabilities:
Derivative liabilities	0		3
Level 2 inputs: | Fair Value
Financial assets:
Investment securities available for sale	324,682		320,192
Investment in Federal Home Loan Bank stock	6,334		3,816
Loans held for sale	63,151		27,538
Financial liabilities:
Deposits	2,424,081		2,383,975
Borrowings	61,374		12,382
Level 2 inputs: | Fair Value | Interest rate swaps
Financial assets:
Derivative assets	17,279		14,179
Financial liabilities:
Derivative liabilities	15,797		12,725
Level 2 inputs: | Fair Value | Retail interest rate contracts
Financial assets:
Derivative assets	145		0
Financial liabilities:
Derivative liabilities	0		3
Level 3 inputs:
Financial assets:
Investment securities available for sale	0		0
Marketable equity securities	0		0
Level 3 inputs: | Mortgage servicing rights
Financial assets:
Servicing rights	19,396		18,635
Level 3 inputs: | Commercial servicing rights
Financial assets:
Servicing rights	2,118		2,129
Level 3 inputs: | Interest rate swaps
Financial assets:
Derivative assets	0		0
Financial liabilities:
Derivative liabilities	0		0
Level 3 inputs: | Retail interest rate contracts
Financial assets:
Derivative assets	0
Financial liabilities:
Derivative liabilities			0
Level 3 inputs: | Interest rate lock commitments
Financial assets:
Derivative assets	518		440
Level 3 inputs: | Carrying Amount
Financial assets:
Investment securities held to maturity	36,750		36,750
Loans individually measured for credit losses	1,720,091		1,501,785
Purchased receivables, net	34,578		19,994
Financial liabilities:
Junior subordinated debentures	10,310		10,310
Level 3 inputs: | Carrying Amount | Mortgage servicing rights
Financial assets:
Servicing rights	19,396		18,635
Level 3 inputs: | Carrying Amount | Commercial servicing rights
Financial assets:
Servicing rights	2,118		2,129
Level 3 inputs: | Carrying Amount | Interest rate lock commitments
Financial assets:
Derivative assets	518		440
Level 3 inputs: | Fair Value
Financial assets:
Investment securities held to maturity	32,233		32,639
Loans individually measured for credit losses	1,594,495		1,408,350
Purchased receivables, net	34,578		19,994
Financial liabilities:
Junior subordinated debentures	11,391		11,266
Level 3 inputs: | Fair Value | Mortgage servicing rights
Financial assets:
Servicing rights	19,396		18,635
Level 3 inputs: | Fair Value | Commercial servicing rights
Financial assets:
Servicing rights	2,118		2,129
Level 3 inputs: | Fair Value | Interest rate lock commitments
Financial assets:
Derivative assets	$ 518		$ 440