Fair Value Measurements - Fair Value, Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financial assets:
Cash and due from banks	$ 18,453	$ 11,800
Securities held to maturity, fair value	35,696	38,569
Accrued interest receivable	1,650	1,615
Financial liabilities:
Deposits	472,752	420,579
Reported Value Measurement
Financial assets:
Cash and due from banks	18,453	11,800
Securities held to maturity, fair value	35,827	39,476
Loans receivable	508,022	502,299
Accrued interest receivable	1,650	1,615
Financial liabilities:
Deposits	472,752	420,579
Advances from Federal Home Loan Bank of New York	51,575	94,275
Accrued interest payable	85	86
Estimate of Fair Value Measurement
Financial assets:
Cash and due from banks	18,453	11,800
Securities held to maturity, fair value	35,696	38,569
Loans receivable	506,634	490,177
Accrued interest receivable	1,650	1,615
Financial liabilities:
Deposits	474,233	421,164
Advances from Federal Home Loan Bank of New York	51,674	93,839
Accrued interest payable	85	86
Level 1 \| Estimate of Fair Value Measurement
Financial assets:
Cash and due from banks	18,453	11,800
Securities held to maturity, fair value	0	0
Loans receivable	0	0
Accrued interest receivable	0	0
Financial liabilities:
Deposits	0	0
Advances from Federal Home Loan Bank of New York	0	0
Accrued interest payable	0	0
Level 2 \| Estimate of Fair Value Measurement
Financial assets:
Cash and due from banks	0	0
Securities held to maturity, fair value	35,696	38,569
Loans receivable	0	0
Accrued interest receivable	90	111
Financial liabilities:
Deposits	474,233	421,164
Advances from Federal Home Loan Bank of New York	51,674	93,839
Accrued interest payable	85	86
Level 3 \| Estimate of Fair Value Measurement
Financial assets:
Cash and due from banks	0	0
Securities held to maturity, fair value	0	0
Loans receivable	506,634	490,177
Accrued interest receivable	1,560	1,504
Financial liabilities:
Deposits	0	0
Advances from Federal Home Loan Bank of New York	0	0
Accrued interest payable	$ 0	$ 0

Amount 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. Excludes cash and cash equivalents within disposal group and discontinued operation.

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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.

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Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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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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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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