XML 66 R88.htm IDEA: XBRL DOCUMENT v3.20.1
Related party transactions (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Founders and initial investors | Royalty Agreements      
Related party transactions      
Royalties earned $ 0    
Royalties paid 0    
Chairman of Board of Directors | Consultancy services with 10X Capital Inc.      
Related party transactions      
Amount of transaction 50,000 $ 200,000 $ 100,000
Chairman of Board of Directors | Consultancy services with Stone Sunny Isles Inc.      
Related party transactions      
Amount of transaction $ 100,000