Note 3 - Securities (Details) - Securities in a Continuous Loss Position (USD $)	Mar. 31, 2015	Dec. 31, 2014
Note 3 - Securities (Details) - Securities in a Continuous Loss Position [Line Items]
Securities available for sale, continuous unrealized loss position, less than 12 months	$ 62,659,000	$ 190,579,000
Securities available for sale, continuous unrealized loss position, less than 12 months, unrealized loss	548,000	740,000
Securities available for sale, continuous unrealized loss position, 12 months or more	69,136,000	74,120,000
Securities available for sale, continuous unrealized loss position, 12 months or more, unrealized loss	1,331,000	2,836,000
Securities available for sale, continuous unrealized loss position	131,795,000	264,699,000
Securities available for sale, continuous unrealized loss position, unrealized loss	1,879,000	3,576,000
US Government Agencies Debt Securities [Member]
Note 3 - Securities (Details) - Securities in a Continuous Loss Position [Line Items]
Securities available for sale, continuous unrealized loss position, less than 12 months	19,508,000	81,891,000
Securities available for sale, continuous unrealized loss position, less than 12 months, unrealized loss	32,000	202,000
Securities available for sale, continuous unrealized loss position, 12 months or more	69,136,000	74,120,000
Securities available for sale, continuous unrealized loss position, 12 months or more, unrealized loss	1,331,000	2,836,000
Securities available for sale, continuous unrealized loss position	88,644,000	156,011,000
Securities available for sale, continuous unrealized loss position, unrealized loss	1,363,000	3,038,000
Collateralized Mortgage Backed Securities [Member]
Note 3 - Securities (Details) - Securities in a Continuous Loss Position [Line Items]
Securities available for sale, continuous unrealized loss position, less than 12 months	26,839,000	49,940,000
Securities available for sale, continuous unrealized loss position, less than 12 months, unrealized loss	266,000	218,000
Securities available for sale, continuous unrealized loss position, 12 months or more	0	0
Securities available for sale, continuous unrealized loss position, 12 months or more, unrealized loss	0	0
Securities available for sale, continuous unrealized loss position	26,839,000	49,940,000
Securities available for sale, continuous unrealized loss position, unrealized loss	266,000	218,000
Municipal General Obligation Bonds [Member]
Note 3 - Securities (Details) - Securities in a Continuous Loss Position [Line Items]
Securities available for sale, continuous unrealized loss position, less than 12 months	14,427,000	54,104,000
Securities available for sale, continuous unrealized loss position, less than 12 months, unrealized loss	248,000	307,000
Securities available for sale, continuous unrealized loss position, 12 months or more	0	0
Securities available for sale, continuous unrealized loss position, 12 months or more, unrealized loss	0	0
Securities available for sale, continuous unrealized loss position	14,427,000	54,104,000
Securities available for sale, continuous unrealized loss position, unrealized loss	248,000	307,000
Municipal Revenue Bonds [Member]
Note 3 - Securities (Details) - Securities in a Continuous Loss Position [Line Items]
Securities available for sale, continuous unrealized loss position, less than 12 months	1,885,000	4,644,000
Securities available for sale, continuous unrealized loss position, less than 12 months, unrealized loss	2,000	13,000
Securities available for sale, continuous unrealized loss position, 12 months or more	0	0
Securities available for sale, continuous unrealized loss position, 12 months or more, unrealized loss	0	0
Securities available for sale, continuous unrealized loss position	1,885,000	4,644,000
Securities available for sale, continuous unrealized loss position, unrealized loss	2,000	13,000
Other Debt Obligations [Member]
Note 3 - Securities (Details) - Securities in a Continuous Loss Position [Line Items]
Securities available for sale, continuous unrealized loss position, less than 12 months	0	0
Securities available for sale, continuous unrealized loss position, less than 12 months, unrealized loss	0	0
Securities available for sale, continuous unrealized loss position, 12 months or more	0	0
Securities available for sale, continuous unrealized loss position, 12 months or more, unrealized loss	0	0
Securities available for sale, continuous unrealized loss position	0	0
Securities available for sale, continuous unrealized loss position, unrealized loss	$ 0	$ 0

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Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 7

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