Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage of principal amount of debt redeemed.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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Debt Obligations - Senior Unsecured Notes (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021	Oct. 31, 2021
Debt Obligations
Redemption of aggregate principal amount (as a percent)	100.00%
Senior notes carrying value	$ 1,283,527	$ 1,280,545
5.00% Convertible notes
Debt Obligations
Debt, Face Value (UPB)	$ 180,000	180,000
Interest rate (as a percent)	5.00%
4.50% Convertible Notes
Debt Obligations
Debt, Face Value (UPB)	$ 270,000	270,000
Interest rate (as a percent)	4.50%
5.00% Convertible Notes
Debt Obligations
Debt, Face Value (UPB)	$ 175,000	175,000
Interest rate (as a percent)	5.00%
5.625% Notes
Debt Obligations
Debt, Face Value (UPB)	$ 125,000	125,000
Interest rate (as a percent)	5.625%		5.625%
4.75% Notes
Debt Obligations
Debt, Face Value (UPB)	$ 110,000	110,000
Interest rate (as a percent)	4.75%
5.75% Convertible Notes
Debt Obligations
Debt, Face Value (UPB)	$ 90,000	90,000
Interest rate (as a percent)	5.75%
Senior Notes
Debt Obligations
Debt, Face Value (UPB)	$ 1,295,750	1,295,750
8.00% Convertible Notes
Debt Obligations
Debt, Face Value (UPB)	$ 70,750	$ 70,750
Interest rate (as a percent)	8.00%