Cash, Cash Equivalents, Restricted Cash And Available-For-Sale Debt Securities

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Cash, Cash Equivalents, Restricted Cash And Available-For-Sale Debt Securities, Amortized Cost

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as noncurrent.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amortized cost excluding accrued interest, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Financial Instruments - Investments in Debt and Marketable Equity Securities Disclosure (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Cost or Amortized Cost
Cash and cash equivalents, at carrying value	$ 612,680	$ 591,003	$ 1,241,255
Restricted cash	36,047	127,278	101,790
Cash, Cash Equivalents, Restricted Cash
Cash, cash equivalents, restricted cash and restricted cash equivalents	648,727	718,281	$ 1,343,045	$ 945,820
Short-term Investments
Short-term Investments	95,458	33,737
Fair Value, Measurements, Recurring
Cost or Amortized Cost
Restricted cash	36,047	127,278
Cash, cash equivalents, and available-for-sale debt securities, amortized cost	801,137	802,430
Unrealized Gains (Losses)
Unrealized Gains	43	4,620
Unrealized Losses	(801)	(204)
Estimated Fair Value
Cash equivalents	398,651	509,971
Cash, cash equivalents, and available-for-sale debt securities	800,379	806,846
Cash, Cash Equivalents, Restricted Cash
Cash, cash equivalents, restricted cash and restricted cash equivalents	648,727	718,281
Short-term Investments
Short-term Investments	95,458	33,737
Long-term Investments
Long-term investments	56,194	54,828
U.S. treasury securities \| Fair Value, Measurements, Recurring
Cost or Amortized Cost
Debt securities, available for sale, estimated fair value	144,749	71,546
Unrealized Gains (Losses)
Unrealized Gains	40	1
Unrealized Losses	(801)	(204)
Estimated Fair Value
Debt securities, available-for-sale, amortized cost	145,510	71,749
Short-term Investments
Short-term Investments	88,555	16,718
Long-term Investments
Long-term investments	56,194	54,828
Agency bonds \| Fair Value, Measurements, Recurring
Cost or Amortized Cost
Debt securities, available for sale, estimated fair value	6,903	11,906
Unrealized Gains (Losses)
Unrealized Gains	3	6
Unrealized Losses	0	0
Estimated Fair Value
Debt securities, available-for-sale, amortized cost	6,900	11,900
Short-term Investments
Short-term Investments	6,903	11,906
Long-term Investments
Long-term investments	0	0
Equity securities
Cost or Amortized Cost
Debt securities, available for sale, estimated fair value		5,113
Unrealized Gains (Losses)
Unrealized Gains		4,613
Unrealized Losses		0
Estimated Fair Value
Debt securities, available-for-sale, amortized cost		500
Short-term Investments
Short-term Investments		5,113
Equity securities \| Fair Value, Measurements, Recurring
Short-term Investments
Short-term Investments		5,113
Long-term Investments
Long-term investments		0
Cash \| Fair Value, Measurements, Recurring
Cost or Amortized Cost
Cash and cash equivalents, at carrying value	214,029	81,032
Estimated Fair Value
Cash equivalents	214,029	81,032
Cash, Cash Equivalents, Restricted Cash
Cash, cash equivalents, restricted cash and restricted cash equivalents	214,029	81,032
Money markets funds \| Fair Value, Measurements, Recurring
Cost or Amortized Cost
Cash and cash equivalents, at carrying value	398,651	509,971
Estimated Fair Value
Cash equivalents	398,651	509,971
Cash, Cash Equivalents, Restricted Cash
Cash, cash equivalents, restricted cash and restricted cash equivalents	$ 398,651	$ 509,971