The term of the fixed-interest portion of the debt.

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Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of the required periodic payments including both interest and principal payments.

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Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt.

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Weighted average interest rate of debt outstanding.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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The calculated average balance outstanding for the year for all Federal Home Loan Bank advances as of the Balance Sheet date.

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The maximum balance outstanding at any month end during the period as of the Balance Sheet date.

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Amount of the collateral pledged in support of federal home loan bank advances outstanding.

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Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB).

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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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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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The cash inflow from a borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in liquidation of the entity's assets or underlying collateral.

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Note 6 - Term Debt (Details Textual) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Mar. 31, 2018	Dec. 31, 2017
Advances from Federal Home Loan Banks, Total		$ 30,000
Proceeds from Issuance of Senior Long-term Debt	$ 10,000
Proceeds from Issuance of Subordinated Long-term Debt	10,000
Federal Funds Purchased [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 35,000
Federal Funds Purchased [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage		1.89%
Federal Funds Purchased [Member] \| Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage		2.56%
Federal Reserve Bank Advances [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 23,600
Senior Notes [Member]
Debt Instrument, Periodic Payment, Total	83
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid	5,000
Debt Issuance Costs, Gross	$ 15
Senior Notes [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	4.00%
Subordinated Debt [Member] \| Fixed to Floating Interest Rate [Member]
Debt Issuance Costs, Gross	$ 210
Debt Instrument, Interest Rate, Stated Percentage	6.88%
Debt Fixed Interest Term	5 years
Subordinated Debt [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Fixed to Floating Interest Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	5.26%
Federal Home Loan Bank of San Francisco [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available		326,600
Advances from Federal Home Loan Banks, Total		30,000	0
Federal Home Loan Bank, Advances, Activity for Year, Average Balance of Agreements Outstanding		12,400	302
Federal Home Loan Bank, Advances, Activity for Year, Maximum Outstanding at any Month End		$ 30,000	$ 10,000
Debt, Weighted Average Interest Rate		1.89%
Federal Home Loan Bank of San Francisco [Member] \| Real Estate [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged		$ 412,100
Federal Home Loan Bank of San Francisco [Member] \| Equity Securities [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged		27,000
Federal Home Loan Bank of San Francisco [Member] \| Other Assets [Member]
Federal Home Loan Bank Stock		$ 4,500