General form of registration statement for all companies including face-amount certificate companies

CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals)

v3.19.1
CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Convertible preferred stock, par value (in dollars per share) $ 0.001 $ 0.001  
Convertible preferred stock, shares authorized 20,000,000 20,000,000  
Convertible preferred stock, shares issued 0 0  
Convertible preferred stock, shares outstanding 0 0  
Preferred stock, par value (in dollars per share)   $ 0.001 $ 0.001
Preferred stock, shares authorized   20,000,000 20,000,000
Common stock, par value (in dollars per share) $ 0.001 $ 0.001 $ 0.001
Common stock, shares authorized 500,000,000 500,000,000 500,000,000
Common stock, shares issued 133,907,747 133,907,747 33,622,829
Common stock, shares outstanding 133,907,747 133,907,747 33,622,829
Redeemable Convertible Series B Preferred Stock      
Preferred stock, shares issued   0 2,833.55
Preferred stock, shares outstanding   0 2,833.55
Issuance costs (in dollars)     $ 347,091
Liquidation preference value (in dollars)     $ 2,800,000
Convertible Series D Preferred Stock      
Preferred stock, shares issued   0 200
Preferred stock, shares outstanding   0 200
Issuance costs (in dollars)     $ 30,557
Liquidation preference value (in dollars)     $ 200,000
Convertible Series F Preferred Stock      
Preferred stock, shares issued   0 2,000
Preferred stock, shares outstanding   0 2,000
Issuance costs (in dollars)     $ 118,855