Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity and Capital Stock - warrants activity (Details)

v3.19.1
Shareholders' Equity and Capital Stock - warrants activity (Details) - $ / shares
Sep. 25, 2018
Mar. 31, 2019
Dec. 31, 2018
Class of Warrant or Right      
Number of warrants, Outstanding   13,062,878 13,062,878
Number of shares to be issued upon exercise, Outstanding   6,531,439 6,531,439
Per share exercise price, Outstanding   $ 1.00 $ 1.00
Warrants      
Class of Warrant or Right      
Stock Repurchased During Period, Shares 6,531,439    
Stock Repurchased, Price Per Share $ 1.00    
Per share exercise price, Outstanding   $ 0.01