Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Equity - Fair Value Assumptions of Options Granted (Details)

v3.10.0.1
Note 10 - Equity - Fair Value Assumptions of Options Granted (Details) - Employee Stock Option [Member]
3 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Expected volatility   42.00%
Expected dividends 0.00% 0.00%
Expected term (Year) 7 years  
Forfeiture rate 20.00% 20.00%
Minimum [Member]    
Expected volatility 42.00%  
Risk-free rate 2.53% 1.98%
Maximum [Member]    
Expected volatility 43.00%  
Risk-free rate 2.63% 2.14%