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Note 9 - Derivative Financial Instrument (Details) - Fair Value of Derivative Instruments in Consolidated Balance Sheets (Designated as Hedging Instrument [Member], USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Interest rate swap contracts | $ 2,375 | $ 2,900
Accounts Payable and Accrued Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest rate swap contracts | 1,228 | 1,215
Other Noncurrent Liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Interest rate swap contracts | $ 1,147 | $ 1,685

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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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