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Note 9 - Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

Years Ending

 

Amount

 

December 31,

 

(in thousands)

 
         

2015

  $ 1,363  

2016

    851   

2017

    344   

2018

    147   

2019

    148   

Thereafter

    324   
    $ 3,177