Adjustment to additional paid in capital resulting from the recognition of convertible debt instruments as two separate components - a debt component and an equity component. This bifurcation may result in a basis difference associated with the liability component that represents a temporary difference for purposes of applying accounting for income taxes. The initial recognition of deferred taxes for the tax effect of that temporary difference is as an adjustment to additional paid in capital.

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Financing and Other Debt - Schedule of Convertible Notes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Jul. 01, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Principal	$ 3,132,090		$ 2,972,674
Less: Unamortized issuance cost			(3,400)	$ (5,800)
Debt financing costs	570
Adjustments to additional paid in capital, equity component of convertible debt	41,066
Convertible Debt
Debt Instrument [Line Items]
Principal			$ 0
Convertible Senior Notes Due 2027 \| Convertible Debt
Debt Instrument [Line Items]
Principal	310,000
Less: Unamortized discounts	(66,755)
Less: Unamortized issuance cost	(2,358)
Net carrying amount of Convertible Notes	240,887	$ 237,500
Equity component	54,689	$ 54,700
Debt financing costs	600
Adjustments to additional paid in capital, equity component of convertible debt	$ 13,600