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Note 3 - Available-for-sale Securities (Details) - Investment Securities - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
2015
Available-for-sale securities, amortized cost	$ 29,625	$ 34,135
Available-for-sale securities, gross unrealized losses	(319)	(453)
Available-for-sale securities, gross unrealized gains	71	0
Available-for-sale securities	29,377	33,682
US Government Agencies Debt Securities [Member]
2015
Available-for-sale securities, amortized cost	5,000	7,500
Available-for-sale securities, gross unrealized losses	(46)	(91)
Available-for-sale securities, gross unrealized gains	0	0
Available-for-sale securities	4,954	7,409
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
2015
Available-for-sale securities, amortized cost	13,625	17,635
Available-for-sale securities, gross unrealized losses	(212)	(298)
Available-for-sale securities, gross unrealized gains	0	0
Available-for-sale securities	13,413	17,337
Corporate Debt Securities [Member]
2015
Available-for-sale securities, amortized cost	9,000	9,000
Available-for-sale securities, gross unrealized losses	(61)	(64)
Available-for-sale securities, gross unrealized gains	71	0
Available-for-sale securities	9,010	$ 8,936
Subordinated Notes [Member]
2015
Available-for-sale securities, amortized cost	2,000
Available-for-sale securities, gross unrealized losses	0
Available-for-sale securities, gross unrealized gains	0
Available-for-sale securities	$ 2,000

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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-Publisher FASB
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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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-Publisher FASB
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-Section 50
-Paragraph 2
-Subparagraph (c)
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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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-Name Accounting Standards Codification
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