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Note 11 - Intangible Assets, Net (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Disclosure Text Block [Abstract]        
Amortization of Intangible Assets $ 357,000 $ 262,000 $ 714,000 $ 526,000
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 715,000   715,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Two 1,424,000   1,424,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Three 921,000   921,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Four 869,000   869,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Five $ 812,000   $ 812,000