v3.19.1

Investment Securities - Pledged Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Amortized Cost |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Securities pledged | $ 22,745 | $ 21,838
Fair Value |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Securities pledged | 22,524 | 21,929
Securities sold under agreements to repurchase | Amortized Cost |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Securities pledged | 16,032 | 14,405
Securities sold under agreements to repurchase | Fair Value |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Securities pledged | 15,862 | 14,475
Federal Home Loan Bank advances | Amortized Cost |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Securities pledged | 6,713 | 7,433
Federal Home Loan Bank advances | Fair Value |  |
Assets Sold under Agreements to Repurchase [Line Items] |  |
Securities pledged | $ 6,662 | $ 7,454

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_AssetsSoldUnderAgreementsToRepurchaseLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728 + Details
Name: | us-gaap_SecurityOwnedAndPledgedAsCollateralFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_SecuritiesInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_FederalHomeLoanBankAdvancesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |