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Note 6 - Other Real Estate Owned (Details) - Activity in the Valuation Allowance for Other Real Estate Losses (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Activity in the Valuation Allowance for Other Real Estate Losses [Abstract] |  |  |
Balance, beginning of year | $ 13,384 us-gaap_RealEstateOwnedValuationAllowance | $ 19,556 us-gaap_RealEstateOwnedValuationAllowance | $ 26,422 us-gaap_RealEstateOwnedValuationAllowance
Provision/(Reversal) for losses | 1,619 us-gaap_RealEstateOwnedValuationAllowanceProvision1 | (2,122)us-gaap_RealEstateOwnedValuationAllowanceProvision1 | 10,668 us-gaap_RealEstateOwnedValuationAllowanceProvision1
OREO disposal | (12,893)us-gaap_RealEstateCostOfRealEstateSold | (4,050)us-gaap_RealEstateCostOfRealEstateSold | (17,534)us-gaap_RealEstateCostOfRealEstateSold
Balance, end of year | $ 2,110 us-gaap_RealEstateOwnedValuationAllowance | $ 13,384 us-gaap_RealEstateOwnedValuationAllowance | $ 19,556 us-gaap_RealEstateOwnedValuationAllowance

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- Definition Amount of real estate investments sold for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 28 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule III -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28.4) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 + Details
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- Definition For each period for which an income statement is required, disclosure of the changes in the allowance, including balances at end of period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(4)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Subparagraph 4 -Article 9 + Details
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- Definition Amount of expense recognized in the income statement for a decrease in valuation of real estate owned (REO). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(4)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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