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Note 2 - Investment Securities (Details) - Investment Securities - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	$ 31,872	$ 34,135
Available-for-sale securities, gross unrealized losses	(312)	(453)
Available-for-sale securities, gross unrealized gains	80
Available-for-sale securities	31,640	33,682
US Government Agencies Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	7,500	7,500
Available-for-sale securities, gross unrealized losses	(71)	(91)
Available-for-sale securities	7,429	7,409
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	15,372	17,635
Available-for-sale securities, gross unrealized losses	(197)	(298)
Available-for-sale securities	15,175	17,337
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	9,000	9,000
Available-for-sale securities, gross unrealized losses	(44)	(64)
Available-for-sale securities, gross unrealized gains	80
Available-for-sale securities	$ 9,036	$ 8,936

X

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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