v3.25.2
Property and equipment: (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Property and equipment:        
Depreciation and amortization expense $ 74,846 $ 74,065 $ 150,439 $ 144,907
Capitalized compensation costs $ 11,201 $ 11,232 $ 22,445 $ 22,929