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Note 8 - Derivative Financial Instruments (Details) - Fair Value of Derivative Instruments in Consolidated Balance Sheets (Designated as Hedging Instrument [Member], USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Interest rate swap contracts	$ 1,488us-gaap_InterestRateDerivativeLiabilitiesAtFairValue	$ 1,750us-gaap_InterestRateDerivativeLiabilitiesAtFairValue
Accounts Payable and Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Interest rate swap contracts	1,194us-gaap_InterestRateDerivativeLiabilitiesAtFairValue / us-gaap_BalanceSheetLocationAxis = us-gaap_AccountsPayableAndAccruedLiabilitiesMember / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember	1,194us-gaap_InterestRateDerivativeLiabilitiesAtFairValue / us-gaap_BalanceSheetLocationAxis = us-gaap_AccountsPayableAndAccruedLiabilitiesMember / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember
Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Interest rate swap contracts	$ 294us-gaap_InterestRateDerivativeLiabilitiesAtFairValue / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember	$ 556us-gaap_InterestRateDerivativeLiabilitiesAtFairValue / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember

X

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- Definition

Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611

+ Details

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