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Note 6 - Financial Instruments and Fair Value (Details) - Fair Values of Derivative Instruments (Other Liabilities [Member], USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
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Other Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest Rate Swaps | $ 117 us-gaap_InterestRateFairValueHedgeLiabilityAtFairValue / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLiabilitiesMember | $ 235 us-gaap_InterestRateFairValueHedgeLiabilityAtFairValue / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherLiabilitiesMember

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Fair value as of the balance sheet date of all derivative liabilities designated as interest rate fair value hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959 + Details
Name: | us-gaap_InterestRateFairValueHedgeLiabilityAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant