Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net income (loss)	$ 9,052	$ (21,899)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	111,479	118,943
Non-cash operating lease costs	5,924	5,913
Share-based compensation	17,619	14,420
Provision for credit losses on accounts receivable	1,819	(1,376)
Deferred income taxes, net	(18,330)	(10,266)
Gain on extinguishment of debt	0	(1,393)
Loss from equity method investments	9,755	6,886
Unrealized loss on short-term investments held at the reporting date, net	23,541	18,366
(Gain) loss on investments, net	(357)	48,243
Other	3,834	2,106
Decrease (increase) in:
Accounts receivable (includes $0 and $8,351 with related parties)	20,470	77,168
Prepaid expenses and other current assets	(13,038)	5,804
Other assets	(4,030)	(4,990)
Increase (decrease) in:
Accounts payable	(1,332)	(36,504)
Deferred revenue	(1,777)	(11,882)
Accrued liabilities and other current liabilities	(9,594)	(17,055)
Net cash provided by operating activities	155,035	192,484
Cash flows from investing activities:
Purchases of property and equipment	(55,250)	(53,876)
Acquisition of businesses, net of cash received	(9,492)	(92,425)
Investment in available-for-sale securities	0	(15,000)
Proceeds from sale of equity investments	3,174	0
Other	(3,753)	0
Net cash used in investing activities	(65,321)	(161,301)
Cash flows from financing activities:
Payment of debt	0	(72,853)
Proceeds from term loan	0	89,991
Debt extinguishment costs	0	(756)
Repurchase of common stock	(62,678)	(76,345)
Issuance of common stock under employee stock purchase plan	4,724	5,235
Proceeds from exercise of stock options	0	148
Deferred payments for acquisitions	(6,679)	(7,094)
Other	21	(5)
Net cash used in financing activities	(64,612)	(61,679)
Effect of exchange rate changes on cash and cash equivalents	1,195	(16,056)
Net change in cash and cash equivalents	26,297	(46,552)
Cash and cash equivalents at beginning of period	652,793	694,842
Cash and cash equivalents at end of period	$ 679,090	$ 648,290