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Note 7 - Leases (Tables)
12 Months Ended
Dec. 31, 2015
Notes Tables  
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]
2016
  $ 381  
2017
    280  
2018
    209  
2019
    188  
2020
    92  
Thereafter
    -  
Total minimum lease payments
    1,150  
Amount representing interest
    (92 )
Present value of minimum lease payments with average interest rates of 4.87%
    1,058  
Current portion of capital lease obligation
    340  
Capital lease obligation, less current portion
  $ 718  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
2016
  $ 2,664  
2017
    2,425  
2018
    1,309  
2019
    893  
2020
    790  
Thereafter
    1,832  
    $ 9,913