Note 3 - Investment Securities (Details) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Amortized Cost	$ 65,507,000	$ 42,158,000
Gross Unrealized Gains	309,000	123,000
Gross Unrealized Losses	106,000	271,000
Securities available for sale	65,710,000	42,010,000
	4,000	4,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
	4,000	4,000
Agency Collateralized Mortgage Obligations [Member]
Amortized Cost	11,427,000	9,391,000
Gross Unrealized Gains	46,000	41,000
Gross Unrealized Losses	82,000	101,000
Securities available for sale	11,391,000	9,331,000
US Government Agencies Debt Securities [Member]
Amortized Cost	79,377,000	84,797,000
Gross Unrealized Gains	97,000	11,000
Gross Unrealized Losses	120,000	355,000
Securities available for sale	79,354,000	84,453,000
Municipal Notes [Member]
Amortized Cost	52,285,000	49,527,000
Gross Unrealized Gains	1,725,000	1,372,000
Gross Unrealized Losses	50,000	60,000
Securities available for sale	53,960,000	50,839,000
Debt Securities [Member]
Amortized Cost	208,596,000	185,873,000
Gross Unrealized Gains	2,177,000	1,547,000
Gross Unrealized Losses	358,000	787,000
Securities available for sale	210,415,000	186,633,000
	4,000
	4,000
Mutual Funds [Member]
Amortized Cost	249,000	118,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Securities available for sale	249,000	118,000
Amortized Cost	208,845,000	185,991,000
Gross Unrealized Gains	2,177,000	1,547,000
Gross Unrealized Losses	358,000	787,000
Securities available for sale	210,664,000	186,751,000
	4,000	4,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
	$ 4,000	$ 4,000

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

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