Fair Value of Assets and Liabilities (Fair Value, by Balance Sheet Grouping) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets: Cash and cash equivalents, Fair Value Disclosure	$ 20,915	$ 18,348
Financial assets: Loans receivable, net, Fair Value Disclosure	917,146	840,134
Financial assets: Mortgage servicing rights, Fair Value Disclosure	220	220
Financial assets: Regulatory stock, Fair Value Disclosure	3,137	3,926
Financial assets: Bank owned life insurance, Fair Value Disclosure	38,562	37,932
Financial assets: Accrued interest receivable, Fair Value Disclosure	3,726	3,776
Financial liabilities: Deposits, Fair Value Disclosure	977,729	945,773
Financial liabilities: Short-term borrowings, Fair Value Disclosure	52,778	53,046
Financial liabilities: Other borrowings, Fair Value Disclosure	36,229	52,043
Financial liabilities: Accrued interest payable, Fair Value Disclosure	2,623	1,806
Off-balance sheet financial instruments: Commitments to extend credit and outstanding letters of credit, Fair Value Disclosure	0	0
Financial assets: Cash and cash equivalents	20,915	18,348	$ 17,368	$ 16,697
Financial assets: Loans receivable, net	897,177	841,730
Financial assets: Mortgage servicing rights	180	178
Financial assets: Regulatory stock	3,137	3,926
Financial assets: Bank owned life insurance	38,562	37,932
Financial assets: Accrued interest receivable	3,726	3,776
Financial liabilities: Deposits	974,433	946,780
Financial liabilities: Short-term borrowings	52,778	53,046
Financial liabilities: Other borrowings	35,906	52,284
Financial liabilities: Accrued interest payable	2,623	1,806
Off-balance sheet financial instruments: Commitments to extend credit and outstanding letters of credit	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets: Cash and cash equivalents, Fair Value Disclosure	20,915	18,348
Financial assets: Loans receivable, net, Fair Value Disclosure	0	0
Financial assets: Mortgage servicing rights, Fair Value Disclosure	0	0
Financial assets: Regulatory stock, Fair Value Disclosure	3,137	3,926
Financial assets: Bank owned life insurance, Fair Value Disclosure	38,562	37,932
Financial assets: Accrued interest receivable, Fair Value Disclosure	3,726	3,776
Financial liabilities: Deposits, Fair Value Disclosure	632,151	601,604
Financial liabilities: Short-term borrowings, Fair Value Disclosure	52,778	53,046
Financial liabilities: Other borrowings, Fair Value Disclosure	0	0
Financial liabilities: Accrued interest payable, Fair Value Disclosure	2,623	1,806
Off-balance sheet financial instruments: Commitments to extend credit and outstanding letters of credit, Fair Value Disclosure	0	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets: Cash and cash equivalents, Fair Value Disclosure	0	0
Financial assets: Loans receivable, net, Fair Value Disclosure	0	0
Financial assets: Mortgage servicing rights, Fair Value Disclosure	0	0
Financial assets: Regulatory stock, Fair Value Disclosure	0	0
Financial assets: Bank owned life insurance, Fair Value Disclosure	0	0
Financial assets: Accrued interest receivable, Fair Value Disclosure	0	0
Financial liabilities: Deposits, Fair Value Disclosure	0	0
Financial liabilities: Short-term borrowings, Fair Value Disclosure	0	0
Financial liabilities: Other borrowings, Fair Value Disclosure	0	0
Financial liabilities: Accrued interest payable, Fair Value Disclosure	0	0
Off-balance sheet financial instruments: Commitments to extend credit and outstanding letters of credit, Fair Value Disclosure	0	0
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets: Cash and cash equivalents, Fair Value Disclosure	0	0
Financial assets: Loans receivable, net, Fair Value Disclosure	917,146	840,134
Financial assets: Mortgage servicing rights, Fair Value Disclosure	220	220
Financial assets: Regulatory stock, Fair Value Disclosure	0	0
Financial assets: Bank owned life insurance, Fair Value Disclosure	0	0
Financial assets: Accrued interest receivable, Fair Value Disclosure	0	0
Financial liabilities: Deposits, Fair Value Disclosure	345,045	344,169
Financial liabilities: Short-term borrowings, Fair Value Disclosure	0	0
Financial liabilities: Other borrowings, Fair Value Disclosure	36,229	52,043
Financial liabilities: Accrued interest payable, Fair Value Disclosure	0	0
Off-balance sheet financial instruments: Commitments to extend credit and outstanding letters of credit, Fair Value Disclosure	$ 0	$ 0

Fair value as of the balance sheet of accrued interest payable.

No definition available.

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- Definition

Fair value as of the balance sheet date of interest receivable.

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No definition available.

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The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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No definition available.

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Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

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No definition available.

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Fair value portion of arrangements with third parties, including, but not limited to, operating lease arrangement and arrangement in which the entity has agreed to expend funds to procure goods or services, or has agreed to commit resources to supply goods or services.

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The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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No definition available.

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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.

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No definition available.

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Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

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Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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- Definition

Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock.

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No definition available.

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- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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No definition available.

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Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

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No definition available.

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Aggregate amount of servicing assets that are subsequently measured at fair value and servicing assets that are subsequently measured using the amortization method.

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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

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