XML 54 R42.htm IDEA: XBRL DOCUMENT v3.23.1
Summary of significant accounting policies, Leases (Details) - USD ($)
$ in Millions
Apr. 26, 2022
Apr. 20, 2021
Dec. 31, 2022
Minimum [Member]      
Leases [Abstract]      
Remaining lease terms     1 year
Maximum [Member]      
Leases [Abstract]      
Remaining lease terms     4 years
Facility in Las Vegas, Nevada [Member]      
Leases [Abstract]      
Increase (decrease) in right-of-use-asset $ 0.8    
Increase (decrease) in operating lease liability $ 0.8    
Facility in Hamden, Connecticut [Member]      
Leases [Abstract]      
Increase (decrease) in right-of-use-asset   $ (0.3)  
Increase (decrease) in operating lease liability   $ (0.3)