XML 184 R170.htm IDEA: XBRL DOCUMENT v3.23.2
Stock-based compensation - Summary of incentive plan for members of the Board of Directors (Details) - Directors - $ / shares
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Roll Forward          
Non-vested at beginning of period     0 0 0
Granted     36,328   25,321
Vested     (36,328)   (25,321)
Forfeited     0   0
Non-vested at end of period 0   0   0
Weighted-Average Grant Date Fair Value          
Non-vested at beginning of period     $ 0 $ 0 $ 0
Granted     54.78   77.48
Vested     54.78   77.48
Forfeited     0   0
Non-vested at end of period $ 0   $ 0   $ 0
Restricted Stock Units (RSUs)          
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Roll Forward          
Non-vested at beginning of period     0    
Granted 32,999 23,022 34,028 23,552  
Non-vested at end of period 0   0   0
Weighted-Average Grant Date Fair Value          
Non-vested at beginning of period     $ 0    
Non-vested at end of period $ 0   $ 0   $ 0