Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details 1)

v3.10.0.1
Stock-Based Compensation (Details 1) - Stock Option [Member] - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options, Beginning Balance 359,076 332,561  
Options, Granted 0 90,286  
Options, Exercised 0 (11,966)  
Options, Expired (8,124) (19,091)  
Options, Forfeited (3,187) (32,714)  
Options, Ending Balance 347,765 359,076 332,561
Options, Exercisable 257,985    
Weighted Average Exercise Price, Beginning Balance $ 53.93 $ 61.87  
Weighted Average Exercise Price, Granted 0 20.12  
Weighted Average Exercise Price, Exercised 0 13.89  
Weighted Average Exercise Price, Expired 53.27 77.46  
Weighted Average Exercise Price, Forfeited 27.28 42.21  
Weighted Average Exercise Price, Ending Balance 54.19 $ 53.93 $ 61.87
Weighted Average Exercise Price, Exercisable $ 64.63    
Weighted Average Remaining Contractual Life, Balance Outstanding 3 years 10 months 24 days 4 years 7 months 6 days 5 years 5 months 26 days
Weighted Average Remaining Contractual Life, Exercisable 3 years 2 months 16 days    
Aggregate Intrinsic Value, Beginning Balance $ 1,800 $ 194,355  
Aggregate Intrinsic Value, Exercised 0 163,050  
Aggregate Intrinsic Value, Ending Balance 0 $ 1,800 $ 194,355
Aggregate Intrinsic Value, Exercisable $ 0