Fair Values of Financial Instruments - Assets Measured at Fair Value on a Non Recurring Basis and Fair Value of Financial Instruments (Details) $ in Thousands	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Financial Assets
Interest-bearing time deposits with other banks	$ 1,183	$ 7,021
Financial Liabilities
Interest-bearing Deposit Liabilities	$ 2,197,975	3,066,004
Accrued Interest [Member]
Financial Liabilities
Interest-bearing Deposit Liabilities		$ 25,496
Impaired loans, Commercial real estate | Weighted Average | Level 3 | Sales comparison approach | Adjustments for differences between the comparable sales and income data for similar loans and collateral underlying such loans
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input		0.36
Nonrecurring | Impaired loans, Commercial real estate | Level 3 | Sales comparison approach
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis		$ 8,240
Nonrecurring | Impaired loans, Commercial real estate | Weighted Average | Level 3 | Sales comparison approach | Adjustments for differences between the comparable sales and income data for similar loans and collateral underlying such loans
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.15
Nonrecurring | Residential real estate
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis	$ 86
Nonrecurring | Residential real estate | Level 3
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis	86
Nonrecurring | Residential real estate | Level 3 | Sales comparison approach
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis	$ 86
Nonrecurring | Residential real estate | Maximum | Level 3 | Discounted cash flow | Discount rate
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.120
Nonrecurring | Commercial real estate loans held for sale
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis	$ 53,628
Nonrecurring | Commercial real estate loans held for sale | Level 2
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis	$ 53,628
Nonrecurring | Mortgage loans held for sale
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis		19,375
Nonrecurring | Mortgage loans held for sale | Level 2
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis		19,375
Nonrecurring | Mortgage loans held for sale | Maximum | Level 3 | Discounted cash flow | Prepayment speed
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.371
Nonrecurring | Mortgage servicing rights
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis	$ 2,052	5,175
Nonrecurring | Mortgage servicing rights | Level 3
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis	2,052	5,175
Nonrecurring | Mortgage servicing rights | Level 3 | Discounted cash flow
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis	$ 2,052	$ 5,175
Nonrecurring | Mortgage servicing rights | Maximum | Level 3 | Discounted cash flow | Discount rate
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input		0.120
Nonrecurring | Mortgage servicing rights | Maximum | Level 3 | Discounted cash flow | Prepayment speed
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input		0.370
Nonrecurring | Mortgage servicing rights | Maximum | Level 3 | Discounted cash flow | Default rate
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.002	0.002
Nonrecurring | Mortgage servicing rights | Minimum | Level 3 | Discounted cash flow | Discount rate
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.095	0.095
Nonrecurring | Mortgage servicing rights | Minimum | Level 3 | Discounted cash flow | Prepayment speed
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.105
Nonrecurring | Mortgage servicing rights | Minimum | Level 3 | Discounted cash flow | Default rate
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.001	0.001
Nonrecurring | Mortgage servicing rights | Weighted Average | Level 3 | Discounted cash flow | Discount rate
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.110	0.116
Nonrecurring | Mortgage servicing rights | Weighted Average | Level 3 | Discounted cash flow | Prepayment speed
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.197	0.237
Nonrecurring | Mortgage servicing rights | Weighted Average | Level 3 | Discounted cash flow | Default rate
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input	0.002	0.002
Nonrecurring | Construction
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis		$ 5,015
Nonrecurring | Construction | Level 3
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis		5,015
Nonrecurring | Construction | Weighted Average | Level 3 | Sales comparison approach | Adjustments for differences between the comparable sales and income data for similar loans and collateral underlying such loans
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis		$ 5,015
Nonrecurring | Construction | Weighted Average | Level 3 | Hybrid of sales comparison and income capitalization approaches | Adjustments for differences between the comparable sales and income data for similar loans and collateral underlying such loans
Fair value of financial assets and liabilities
Assets measured at fair value, measurement input		0.15
Nonrecurring | Commercial real estate
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis		$ 8,240
Nonrecurring | Commercial real estate | Level 3
Fair value of financial assets and liabilities
Assets measured at fair value on a non-recurring basis		8,240
Carrying value per balance sheet
Financial Assets
Cash and due from banks	$ 411,676	998,497
Interest-bearing time deposits with other banks	1,183	7,021
Mortgage loans held for sale	11,359	2,909
Loans, net	1,956,180	2,434,356
Financial Liabilities
Time deposits	891,820	1,672,019
Federal Home Loan Bank borrowings	150,000	318,000
Subordinated notes, net	65,343	65,341
Estimated fair value
Financial Assets
Cash and due from banks	411,676	998,497
Interest-bearing time deposits with other banks	1,183	7,021
Mortgage loans held for sale	11,809	3,052
Loans, net	2,025,409	2,521,874
Financial Liabilities
Time deposits	894,049	1,683,516
Federal Home Loan Bank borrowings	152,560	328,150
Subordinated notes, net	65,073	65,753
Estimated fair value | Level 1
Financial Assets
Cash and due from banks	411,676	998,497
Interest-bearing time deposits with other banks	1,183	7,021
Estimated fair value | Level 2
Financial Assets
Mortgage loans held for sale	11,809	3,052
Financial Liabilities
Time deposits	894,049	1,683,516
Federal Home Loan Bank borrowings	152,560	328,150
Subordinated notes, net	65,073	65,753
Estimated fair value | Level 3
Financial Assets
Loans, net	$ 2,025,409	$ 2,521,874