XML 61 R48.htm IDEA: XBRL DOCUMENT v3.22.1
Summary of significant accounting policies, Engineering, design and product development (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Engineering, design and product development [Abstract]    
Research and development expense $ 7,475 $ 5,703
Unamortized development costs of software 396  
Amortization of capitalized software development costs $ 154 $ 153