Quarterly report pursuant to Section 13 or 15(d)

Stock Options (Details)

v3.7.0.1
Stock Options (Details) - USD ($)
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Schedule of weighted-average assumptions Black-Scholes option-pricing model    
Risk-free interest rate 2.27% 1.47%
Expected life of option grants 7 years 7 years
Expected volatility of underlying stock 47.34% 49.02%
Dividends assumption