Fair Values Measurements - Fair Value Nonrecurring Basis (Details) - Nonrecurring - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases	$ 244,943	$ 141,199
Loan servicing rights	38,816	56,298
Other real estate owned	17,647	17,577
Repossessed and returned assets	8,259	6,968
Total assets at fair value	309,665	222,042
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	8,259	6,968
Total assets at fair value	8,259	6,968
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases	244,943	141,199
Loan servicing rights	38,816	56,298
Other real estate owned	17,647	17,577
Repossessed and returned assets	0	0
Total assets at fair value	$ 301,406	$ 215,074