Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Intangible Assets (Details) - Other Intangible Assets

v3.2.0.727
Note 3 - Intangible Assets (Details) - Other Intangible Assets - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 4,806 $ 4,802
Accumulated Amortization (2,392) (2,140)
Net Carrying Amount 2,414 2,662
Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 512 512
Accumulated Amortization (186) (168)
Net Carrying Amount $ 326 344
Computer Software, Intangible Asset [Member]    
Finite-Lived Intangible Assets [Line Items]    
Useful Lives (Years) 3 years  
Gross Carrying Amount $ 379 375
Accumulated Amortization (358) (319)
Net Carrying Amount $ 21 56
Customer Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Useful Lives (Years) 12 years  
Gross Carrying Amount $ 3,370 3,370
Accumulated Amortization (1,503) (1,335)
Net Carrying Amount $ 1,867 2,035
Permits [Member]    
Finite-Lived Intangible Assets [Line Items]    
Useful Lives (Years) 10 years  
Gross Carrying Amount $ 545 545
Accumulated Amortization (345) (318)
Net Carrying Amount $ 200 $ 227
Minimum [Member] | Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Useful Lives (Years) 8 years  
Maximum [Member] | Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Useful Lives (Years) 18 years