Fair Value Measurements - Carrying Amount and Estimated Fair Values (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financial Assets
Federal funds sold and interest-bearing deposits in other financial institutions	$ 17,337	$ 16,010
Available-for-sale securities	45,627	47,098
Loans, net of allowance	373,523	367,171
Accrued interest receivable	1,651	1,683
Federal Home Loan Bank stock	2,065	2,065
Financial Liabilities
Subordinated debentures	5,000	5,000
Accrued interest payable	421	410
Level 1
Financial Assets
Cash and cash equivalents	6,998	8,875
Federal funds sold and interest-bearing deposits in other financial institutions	17,337	26,010
Accrued interest receivable	11	13
Financial Liabilities
Demand and savings deposits	244,539	247,768
Accrued interest payable	20	17
Level 2
Financial Assets
Available-for-sale securities	43,987	45,468
Loans held for sale	119	274
Accrued interest receivable	217	255
Financial Liabilities
Time deposits	136,373	138,869
FHLB advances	29,965	29,837
Accrued interest payable	344	339
Level 3
Financial Assets
Available-for-sale securities	1,640	1,630
Loans, net of allowance	371,482	364,862
Accrued interest receivable	1,423	1,415
Financial Liabilities
Subordinated debentures	2,722	2,722
Accrued interest payable	57	54
Carrying Amount
Financial Assets
Cash and cash equivalents	6,998	8,875
Federal funds sold and interest-bearing deposits in other financial institutions	17,337	26,010
Available-for-sale securities	45,627	47,098
Loans, net of allowance	373,523	367,171
Loans held for sale	117	269
Accrued interest receivable	1,651	1,683
Federal Home Loan Bank stock	2,065	2,065
Financial Liabilities
Demand and savings deposits	244,539	247,768
Time deposits	137,262	140,841
FHLB advances	30,000	30,000
Subordinated debentures	5,000	5,000
Accrued interest payable	421	410
Total
Financial Assets
Cash and cash equivalents	6,998	8,875
Federal funds sold and interest-bearing deposits in other financial institutions	17,337	26,010
Available-for-sale securities	45,627	47,098
Loans, net of allowance	371,482	364,862
Loans held for sale	119	274
Accrued interest receivable	1,651	1,683
Financial Liabilities
Demand and savings deposits	244,539	247,768
Time deposits	136,373	138,869
FHLB advances	29,965	29,837
Subordinated debentures	2,722	2,722
Accrued interest payable	$ 421	$ 410

Represents the fair value of demand deposit liabilities held by the entity.

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Represents the amount of interest bearing deposit assets including deposits in other financial institutions.

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Represents the fair value of time deposit liabilities held by the entity.

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Amount of debt securities categorized neither as held-to-maturity nor trading.

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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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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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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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Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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