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Equity and dividends (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 2 Months Ended 3 Months Ended 9 Months Ended
Sep. 13, 2021
Nov. 02, 2022
Dec. 14, 2022
Nov. 23, 2022
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dividends Payable [Line Items]                
Preferred shares issued         0   0  
Shares forfeited               55,510
Acquisition of remaining interest in NCI               $ 5,556
Gain (Loss) from intra-entity foreign currency transactions         $ (10,200) $ (3,300) $ (19,600) (5,900)
Shares issued for business combination [Member]                
Dividends Payable [Line Items]                
Share capital from additional paid-in capital         300   300  
Unrecognized share based continuing employment costs         $ 4,700 $ 9,200 $ 4,700 $ 9,200
Unrecognized share based continuing employment costs, weighted average period for recognition             1 year 2 months 12 days  
Xcira LLC [Member]                
Dividends Payable [Line Items]                
Percentage of membership interest acquired 25.00%              
Acquisition of remaining interest in NCI $ 5,600              
Percentage of ownership interest 100.00%              
Subsequent Event [Member]                
Dividends Payable [Line Items]                
Dividends declared (USD per share)     $ 0.27          
Dividends payable date       Dec. 14, 2022        
Dividends, date of record   Nov. 23, 2022            
Rouse Services LLC [Member]                
Dividends Payable [Line Items]                
Shares forfeited               55,510