Quarterly report pursuant to Section 13 or 15(d)

Commitments and contingencies (Details)

v3.8.0.1
Commitments and contingencies (Details)
Mar. 31, 2018
USD ($)
shares
Mar. 26, 2018
USD ($)
Feb. 27, 2018
USD ($)
ft²
Dec. 21, 2017
USD ($)
Dec. 19, 2017
USD ($)
$ / shares
shares
Operating Leased Assets [Line Items]          
Warrants to purchase common stock | shares 13,009        
Accrued expenses $ 333,000        
Amount paid to consultant $ 4,000,000        
Kairos Global Technology, Inc [Member]          
Operating Leased Assets [Line Items]          
Area of lease | ft²     107,600    
Base rent per month   $ 665,760 $ 223,800    
Registration Rights Agreement [Member]          
Operating Leased Assets [Line Items]          
Subscriptions amount       $ 37,037,528 $ 37,000,000
Subscriptions amount additional unit         $ 37,528
Per unit price | $ / shares         $ 22.50
Warrants to purchase common stock | shares         1,646,113