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F. INTANGIBLE ASSETS - NARRATIVE (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Amortization expense for intangible assets $ 0.5 $ 0.4 $ 0.4
Weighted average amortization period 8 years 7 months 6 days    
License      
Weighted average amortization period     10 years