Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Details 3)

v3.8.0.1
Stockholders' Equity (Details 3) - $ / shares
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Stockholders Equity Details 3    
Non-vested at beginning of period 450,476 359,001
Granted 1,854,277 1,210,467
Vested (762,017) (1,118,992)
Forfeited
Non-vested at end of period 1,542,736 450,476
Weighted average fair value grant date, beginning of period $ 3.60 $ 4.55
Weighted average fair value grant date, granted 0.77 1.71
Weighted average fair value grant date, vested 1.67 1.81
Weighted average fair value grant date, forfeited  
Weighted average fair value grant date, end of period 1.10 3.60
Weighted average exercise price, beginning of period 5.40 6.70
Weighted average exercise price, granted 1.05 3.02
Weighted average exercise price, vested 2.54 3.19
Weighted average exercise price, forfeited
Weighted average exercise price, end of period $ 1.58 $ 5.40