Quarterly report pursuant to Section 13 or 15(d)

Stock based compensation, options and warrants (Schedule of Nonvested Awards) (Details)

v3.8.0.1
Stock based compensation, options and warrants (Schedule of Nonvested Awards) (Details) - Stock Incentive Plan [Member]
9 Months Ended
Sep. 30, 2017
$ / shares
shares
Nonvested Shares Underlying Options  
Beginning balance | shares 97,738
Granted | shares 20,000
Vested | shares (30,905)
Forfeited | shares (57,000)
Ending balance | shares 29,833
Weighted Average Exercise Price  
Beginning balance $ 3.51
Granted 4.02
Vested 4.92
Forfeited 2.92
Ending balance 3.54
Weighted Average Grant Date Fair Value  
Beginning balance 2.58
Granted 3.04
Vested 3.57
Forfeited 2.16
Ending balance $ 2.67