Allowance for Credit Losses - Amortized Cost Basis of Collateral Dependent Loans Individually Evaluated to Determine Credit Losses and Related ACL Allocated to Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable Allowance For Credit Losses [Line Items]
Total Allowance for Credit Losses	$ 28,129	$ 20,800
Collateral Dependent Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	7,057
Total Allowance for Credit Losses	116
Collateral Dependent Loans | Real Estate.
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	5,609
Collateral Dependent Loans | Cash
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	268
Collateral Dependent Loans | Equipment/Receivables
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	1,180
Collateral Dependent Loans | Residential Properties | Single Family
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	3,649
Collateral Dependent Loans | Residential Properties | Real Estate. | Single Family
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	3,649
Collateral Dependent Loans | Commercial Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	421
Collateral Dependent Loans | Commercial Real Estate | Real Estate.
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	421
Collateral Dependent Loans | Commercial and Industrial Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	2,469
Total Allowance for Credit Losses	116
Collateral Dependent Loans | Commercial and Industrial Loans | Real Estate.
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	1,039
Collateral Dependent Loans | Commercial and Industrial Loans | Cash
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	250
Collateral Dependent Loans | Commercial and Industrial Loans | Equipment/Receivables
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	1,180
Collateral Dependent Loans | Consumer Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	18
Collateral Dependent Loans | Consumer Loans | Cash
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	18
Collateral Dependent Loans | Land
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	500
Collateral Dependent Loans | Land | Real Estate.
Financing Receivable Allowance For Credit Losses [Line Items]
Amortized cost	$ 500