UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Supplemental disclosures:
Cash and cash equivalents	$ 474,203	$ 212,815
Restricted cash (Note 1)	1,998	1,874
Total cash, cash equivalents and restricted cash shown in the statements of cash flows	476,201	214,689
Cash paid for income taxes, net of refunds	25,052	2,289
Non-cash transactions
Property and equipment purchases in accounts payable and accrued liabilities	$ 750	$ 2,009