Note 11 - Contingencies, Commitments, and Guarantees (Tables)
12 Months Ended
Dec. 31, 2014
Disclosure Text Block Supplement [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

Year Ending December 31,

       

2015

  $ 609  

2016

    618  

2017

    622  

2018

    604  

Thereafter

     
    $ 2,453