Fair Values Measurements - Fair Value Nonrecurring Basis (Details) - Nonrecurring - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases	$ 141,199	$ 57,663
Loan servicing rights	56,298
Other real estate owned	17,577	9,397
Repossessed and returned assets	6,968	9,523
Total assets at fair value	222,042	76,583
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases	0	0
Loan servicing rights	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
Other real estate owned	0	0
Repossessed and returned assets	6,968	4,358
Total assets at fair value	6,968	4,358
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans and leases	141,199	57,663
Loan servicing rights	56,298
Other real estate owned	17,577	9,397
Repossessed and returned assets	0	5,165
Total assets at fair value	$ 215,074	$ 72,225