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Loans and Allowance for Credit Losses on Loans - Collateral dependent loans (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | $ 25,039 |
ACL Allocation | 30,045 | $ 19,789
Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 22,347 |
Accounts Receivable |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 2,416 |
Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 276 |
Collateral |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
ACL Allocation | 1,867 |
Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 2,419 |
Commercial | Accounts Receivable |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 2,416 |
Commercial | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 3 |
Commercial | Collateral |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
ACL Allocation | 89 |
Leases |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 264 |
Leases | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 264 |
Leases | Collateral |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
ACL Allocation | 61 |
Commercial real estate - Investor |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 4,430 |
Commercial real estate - Investor | Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 4,430 |
Commercial real estate - Investor | Collateral |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
ACL Allocation | 203 |
Commercial real estate - Owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 8,459 |
Commercial real estate - Owner occupied | Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 8,459 |
Commercial real estate - Owner occupied | Collateral |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
ACL Allocation | 204 |
Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 2,245 |
Construction | Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 2,245 |
Construction | Collateral |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
ACL Allocation | 852 |
Real estate - Investor |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 859 |
Real estate - Investor | Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 859 |
Real estate - Owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 3,739 |
Real estate - Owner occupied | Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 3,739 |
Real estate - Owner occupied | Collateral |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
ACL Allocation | 137 |
Multifamily |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 1,497 |
Multifamily | Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 1,497 |
Multifamily | Collateral |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
ACL Allocation | 318 |
HELOC |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 1,004 |
HELOC | Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 1,004 |
HELOC - Purchased |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 114 |
HELOC - Purchased | Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 114 |
Other 1 |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 9 |
Other 1 | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans pledged as collateral | 9 |
Other 1 | Collateral |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
ACL Allocation | $ 3 |

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