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Note 16 - Derivative Financial Instruments (Details) - Summary of Derivative Fair Values (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2013
Mar. 31, 2013
Dec. 31, 2012
Mar. 31, 2014
Interest Rate Swap [Member]
Current Liabilities [Member]
Dec. 31, 2013
Interest Rate Swap [Member]
Current Liabilities [Member]
Mar. 31, 2014
Interest Rate Swap [Member]
Non Current Liabilities [Member]
Dec. 31, 2013
Interest Rate Swap [Member]
Non Current Liabilities [Member]
Dec. 31, 2012
Interest Rate Swap [Member]
Dec. 31, 2013
Current Liabilities [Member]
Dec. 31, 2013
Non Current Liabilities [Member]
Derivatives, Fair Value [Line Items]                    
Interest rate swaps       Current liabilities - Derivative financial instruments Current liabilities - Derivative financial instruments Non Current liabilities - Derivative financial instruments Non Current liabilities - Derivative financial instruments Current liabilities - Derivative financial instruments    
Interest rate swaps $ 1,697 $ 1,416 $ 5,811 $ 1,136 $ 1,135 $ 280 $ 562 $ 5,811 $ 1,135 $ 562