Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Summary of significant accounting policies - Post-employment Benefits (Details)

v3.22.1
Summary of significant accounting policies - Post-employment Benefits (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Accounting Policies [Abstract]      
Severance pay $ 4,096 $ 2,436 $ 2,043
Maximum contribution percent of pretax salary (up to) 50.00%    
Maximum amount of contribution per employee $ 18    
Additional contribution amount for employees over 50 $ 6    
Employee contribution match, percent 100.00%    
Employer contribution percent of salary, maximum, percent 4.00%    
Company's matching contribution amount $ 656 $ 395 $ 212