Note 6 - Term Debt - Term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Federal Home Loan Bank of San Francisco borrowings	$ 60,000
Long-term debt, gross	15,296	17,096
Unamortized debt issuance costs	(115)	(138)
Net term debt	75,181	16,958
Senior Notes [Member]
Long-term debt, gross	5,296	7,096
Unamortized debt issuance costs	(4)	(6)
Subordinated Debt [Member]
Long-term debt, gross	10,000	10,000
Unamortized debt issuance costs	$ (111)	$ (132)

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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