Note 4 - Property and Equipment, Net (Tables)
 12 Months Ended
Dec. 31, 2013
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment [Table Text Block]
   

As of December 31,

 
   

2013

   

2012

 

Equipment and software

  $ 83,075     $ 65,937  

Buildings and improvements

    29,342       28,319  

Land

    5,600       5,600  

Furniture and fixtures

    2,681       2,518  

Leasehold improvements

    2,150       2,053  

Vehicles

    976       1,002  

Property and equipment, gross

    123,824       105,429  

Less: accumulated depreciation and amortization

    (58,987 )     (46,017 )

Property and equipment, net

  $ 64,837     $ 59,412