Quarterly report pursuant to Section 13 or 15(d)

Stock based compensation, options and warrants (Schedule of Recognized Stock-based Compensation) (Details)

v3.19.2
Stock based compensation, options and warrants (Schedule of Recognized Stock-based Compensation) (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation $ 115,026 $ 1,608,086 $ 350,068 $ 2,492,029
Restricted Stock [Member]        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation 115,026 1,432,593 291,570 2,199,542
Stock options awards under the Plan [Member]        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation $ 175,493 $ 58,498 $ 292,487