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Debt - Kanis S. A. Indebtedness (Details) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Jan. 31, 2017
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Apr. 01, 2016
Debt Instrument            
Loss on extinguishment of debt   $ 0 $ (1,630,000) $ (194,000) $ (1,630,000)  
Convertible Debt | Two Million 8 Percent Shareholder Note Due September 2017            
Debt Instrument            
Face amount of debt           $ 2,000,000.0
Interest rate (as a percent)           8.00%
Repayments of notes payable $ 2,000,000          
Loss on extinguishment of debt $ (200,000)