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Note 4 - Property and Equipment (Details) - Property and equipment summary (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Property, Plant and Equipment [Line Items]    
Property, Plant, and Equipment $ 167,096 $ 165,851
Less accumulated depreciation (71,170) (63,543)
95,926 102,308
Computer Equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Property, Plant, and Equipment 129,547 130,014
Transportation Equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Property, Plant, and Equipment 19,723 19,266
Building [Member]
    
Property, Plant and Equipment [Line Items]    
Property, Plant, and Equipment 10,512 10,176
Office Equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Property, Plant, and Equipment 1,722 1,279
Land [Member]
    
Property, Plant and Equipment [Line Items]    
Property, Plant, and Equipment 5,392 4,916
Water Rights [Member]
    
Property, Plant and Equipment [Line Items]    
Property, Plant, and Equipment $ 200 $ 200