Annual report pursuant to Section 13 and 15(d)

Nature of business and summary of significant accounting policies, Advertising & Share-based compensation (Details)

v3.20.1
Nature of business and summary of significant accounting policies, Advertising & Share-based compensation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Share-based compensation [Abstract]    
Expected life 3 years  
Halo Acquisition [Member]    
Advertising [Abstract]    
Advertising costs $ 6.7 $ 3.9