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Note 2 - Securities- Securities in a Continuous Loss Position (Details) - USD ($) | Jun. 30, 2016 | Dec. 31, 2015
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US Government Agencies Debt Securities [Member] |  |
Available for Sale Securities in a Continuous Loss Position, Less than 12 months Fair Value | $ 3,991,000 | $ 0
Available for Sale Securities in a Continuous Loss Position, Less than 12 months Unrealized Loss | 9,000 | 0
Available for Sale Securities in a Continuous Loss Position, 12 Months or More Fair Value | 2,958,000 | 76,496,000
Available for Sale Securities in a Continuous Loss Position, 12 Months or More Unrealized Loss | 29,000 | 1,552,000
Available for Sale Securities in a Continuous Loss Position, Fair Value | 6,949,000 | 76,496,000
Available for Sale Securities in a Continuous Loss Position, Unrealized Loss | 38,000 | 1,552,000
Collateralized Mortgage Backed Securities [Member] |  |
Available for Sale Securities in a Continuous Loss Position, Less than 12 months Fair Value | 3,212,000 | 18,025,000
Available for Sale Securities in a Continuous Loss Position, Less than 12 months Unrealized Loss | 16,000 | 69,000
Available for Sale Securities in a Continuous Loss Position, 12 Months or More Fair Value | 9,899,000 | 34,660,000
Available for Sale Securities in a Continuous Loss Position, 12 Months or More Unrealized Loss | 34,000 | 235,000
Available for Sale Securities in a Continuous Loss Position, Fair Value | 13,111,000 | 52,685,000
Available for Sale Securities in a Continuous Loss Position, Unrealized Loss | 50,000 | 304,000
Municipal General Obligation Bonds [Member] |  |
Available for Sale Securities in a Continuous Loss Position, Less than 12 months Fair Value | 850,000 | 1,981,000
Available for Sale Securities in a Continuous Loss Position, Less than 12 months Unrealized Loss | 5,000 | 4,000
Available for Sale Securities in a Continuous Loss Position, 12 Months or More Fair Value | 9,042,000 | 30,134,000
Available for Sale Securities in a Continuous Loss Position, 12 Months or More Unrealized Loss | 89,000 | 201,000
Available for Sale Securities in a Continuous Loss Position, Fair Value | 9,892,000 | 32,115,000
Available for Sale Securities in a Continuous Loss Position, Unrealized Loss | 94,000 | 205,000
Municipal Revenue Bonds [Member] |  |
Available for Sale Securities in a Continuous Loss Position, Less than 12 months Fair Value | 557,000 | 0
Available for Sale Securities in a Continuous Loss Position, Less than 12 months Unrealized Loss | 0 | 0
Available for Sale Securities in a Continuous Loss Position, 12 Months or More Fair Value | 0 | 1,134,000
Available for Sale Securities in a Continuous Loss Position, 12 Months or More Unrealized Loss | 0 | 3,000
Available for Sale Securities in a Continuous Loss Position, Fair Value | 557,000 | 1,134,000
Available for Sale Securities in a Continuous Loss Position, Unrealized Loss | 0 | 3,000
Other Debt Obligations [Member] |  |
Available for Sale Securities in a Continuous Loss Position, Less than 12 months Fair Value | 0 | 1,446,000
Available for Sale Securities in a Continuous Loss Position, Less than 12 months Unrealized Loss | 0 | 5,000
Available for Sale Securities in a Continuous Loss Position, 12 Months or More Fair Value | 0 | 0
Available for Sale Securities in a Continuous Loss Position, 12 Months or More Unrealized Loss | 0 | 0
Available for Sale Securities in a Continuous Loss Position, Fair Value | 0 | 1,446,000
Available for Sale Securities in a Continuous Loss Position, Unrealized Loss | 0 | 5,000
Available for Sale Securities in a Continuous Loss Position, Less than 12 months Fair Value | 8,610,000 | 21,452,000
Available for Sale Securities in a Continuous Loss Position, Less than 12 months Unrealized Loss | 30,000 | 78,000
Available for Sale Securities in a Continuous Loss Position, 12 Months or More Fair Value | 21,899,000 | 142,424,000
Available for Sale Securities in a Continuous Loss Position, 12 Months or More Unrealized Loss | 152,000 | 1,991,000
Available for Sale Securities in a Continuous Loss Position, Fair Value | 30,509,000 | 163,876,000
Available for Sale Securities in a Continuous Loss Position, Unrealized Loss | $ 182,000 | $ 2,069,000

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- Definition 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 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27337-111563 + Details
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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27290-111563 + Details
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