Annual report pursuant to Section 13 and 15(d)

Stock Option Plans (Details Narrative)

v3.20.1
Stock Option Plans (Details Narrative) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Intrinsic value outstanding options $ 400,000 $ 3,200,000 $ 600,000  
2015 Equity Incentive Plan [Member]        
Common stock authorized but unissued 10,000,000      
Maximum contractual term 10 years      
Intrinsic value outstanding options $ 700,000 8,400,000 46,000,000  
Intrinsic value exercisable options 600,000 $ 6,000,000 $ 25,600,000  
Compensation cost related to non-vested options not recognized $ 14,400,000      
Weighted average period total compensation costs related to non-vested options 2 years 8 months 12 days      
Shares of restricted common stock forfeited 22,000      
Shares of restricted common stock vested      
Compensation cost related to restricted common stock not recognized $ 500,000      
Weighted average compensation costs related to restricted common stock 2 months 12 days      
Options outstanding and exercisable 5,795,395 5,525,405 5,112,967 4,443,000
2015 Equity Incentive Plan [Member] | Employees [Member]        
Shares of restricted common stock granted 376,625  
2005 Equity Incentive Plan [Member]        
Intrinsic value outstanding options $ 0 $ 500,000 $ 1,500,000  
Options outstanding and exercisable 260,000 316,400 316,760 328,560