Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Stock option award activity (Details)

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Stockholders' Equity - Stock option award activity (Details) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Stockholders' Equity    
Shares, Balance, January 1, 2019 290,000  
Shares, Granted 0  
Shares, Balance, September 30, 2019 290,000 290,000
Shares, Exercisable, September 30, 2019 263,333  
Weighted Average Exercise Price, Balance, January 1, 2019 $ 5.55  
Weighted Average Exercise Price, Granted 0  
Weighted Average Exercise Price, Balance, September 30, 2019 5.55 $ 5.55
Weighted Average Exercise Price, Exercisable, September 30, 2019 $ 5.41  
Remaining Contractual Life in Years, Granted 0 years  
Remaining Contractual Life in Years, Balance 3 years 6 months 4 years 2 months 12 days
Remaining Contractual Life in Years, Exercisable, September 30, 2019 3 years 6 months  
Aggregate Intrinsic Value, Balance, January 1, 2019 $ 0  
Aggregate Intrinsic Value, Granted $ 0  
Aggregate Intrinsic Value, Balance, September 30, 2019 $ 0 $ 0
Aggregate Intrinsic Value, Exercisable, September 30, 2019 $ 0