UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Supplemental disclosures:
Cash and cash equivalents	$ 406,042	$ 147,711
Restricted cash (Note 1)	1,969	1,719
Total cash, cash equivalents and restricted cash shown in the statements of cash flows	408,011	149,430
Cash paid for income taxes, net of refunds	47,689	7,503
Non-cash transactions
Property and equipment purchases in accounts payable and accrued liabilities	$ 1,784	$ 1,244