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Note 1 - Organization and Basis of Presentation (Details Textual) - USD ($)
$ in Thousands
Oct. 19, 2016
Dec. 31, 2016
Oct. 18, 2016
Number of States in which Entity Operates   40  
In Addition to the United States [Member]      
Number of Countries in which Entity Operates   9  
Matrix [Member]      
Equity Method Investment, Ownership Percentage 46.80% 46.80% 100.00%
Matrix [Member]      
Interest in Subsidiary Subscribed for by Third Party 53.20%    
Net Gain, Matrix Transaction $ 109,403