Quarterly report pursuant to Section 13 or 15(d)

Stock based compensation, options and warrants (Schedule of Restricted Stock Activity) (Details)

v3.19.2
Stock based compensation, options and warrants (Schedule of Restricted Stock Activity) (Details) - Restricted Stock [Member]
6 Months Ended
Jun. 30, 2019
$ / shares
shares
Number of shares  
Unvested at January 1, 2019 | shares 95,939
Vested | shares (37,459)
Granted | shares 24,500
Forfeited | shares (40,000)
Unvested at June 30, 2019 | shares 42,980
Weighted Average Grant Date Fair value  
Unvested at January 1, 2019 | $ / shares $ 12.49
Vested | $ / shares 8.01
Granted | $ / shares 5.11
Forfeited | $ / shares 16.82
Unvested at June 30, 2019 | $ / shares $ 7.43