Fair Value Measurements - Fair Value Nonrecurring Basis (Details) - Nonrecurring - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases	$ 602,723	$ 592,133
Loan servicing rights	44,151	38,303
Other real estate owned	14,072	14,575
Repossessed and returned assets	6,348	7,332
Total assets at fair value	667,294	652,343
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases	0	0
Loan servicing rights	0	0
Other real estate owned	0	0
Repossessed and returned assets	0	0
Total assets at fair value	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases	0	0
Loan servicing rights	0	0
Other real estate owned	0	0
Repossessed and returned assets	6,348	7,332
Total assets at fair value	6,348	7,332
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases	602,723	592,133
Loan servicing rights	44,151	38,303
Other real estate owned	14,072	14,575
Repossessed and returned assets	0	0
Total assets at fair value	$ 660,946	$ 645,011