PCI Loans and Related Allowance for Loan Losses (Summary of Covered Loans Collectively Evaluated for Impairment in the Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 156	$ 156
Recorded investment in loans	29,507	32,528
Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	156	156
Recorded investment in loans	29,507	32,528
Mortgage Loans on Real Estate [Member] \| Residential 1-4 Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	156	156
Recorded investment in loans	26,531	29,465
Mortgage Loans on Real Estate [Member] \| Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans	470	490
Mortgage Loans on Real Estate [Member] \| Construction and Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans	1,127	1,172
Mortgage Loans on Real Estate [Member] \| Second Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans	1,156	1,169
Mortgage Loans on Real Estate [Member] \| Multifamily [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans	223	232
Purchase Credit Impaired (PCI) Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	156	156
Recorded investment in loans	29,507	32,528
Purchase Credit Impaired (PCI) Loans [Member] \| Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans	29,507	32,528
Purchase Credit Impaired (PCI) Loans [Member] \| Mortgage Loans on Real Estate [Member] \| Residential 1-4 Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans	26,531	29,465
Purchase Credit Impaired (PCI) Loans [Member] \| Mortgage Loans on Real Estate [Member] \| Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans	470	490
Purchase Credit Impaired (PCI) Loans [Member] \| Mortgage Loans on Real Estate [Member] \| Construction and Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans	1,127	1,172
Purchase Credit Impaired (PCI) Loans [Member] \| Mortgage Loans on Real Estate [Member] \| Second Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans	1,156	1,169
Purchase Credit Impaired (PCI) Loans [Member] \| Mortgage Loans on Real Estate [Member] \| Multifamily [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in loans	$ 223	$ 232

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.

No definition available.

+ Details

Name:	us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Reserve for loans impairments recorded after acquisition as a result of current information and events which result in it being probable that estimated cash flows will be less than previously expected or because actual cash flows are less than cash flows previously expected. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118938799&loc=d3e13503-111538

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=118939070&loc=d3e15032-111544

+ Details

Name:	us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAllowanceForLoanLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=118939070&loc=d3e15032-111544

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118938799&loc=d3e13503-111538

+ Details

Name:	us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_RealEstateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=us-gaap_ResidentialMortgageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=us-gaap_ConstructionLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=us-gaap_SecondMortgageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis=srt_MultifamilyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditLossStatusAxis=us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: