Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.

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Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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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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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Jan. 31, 2021	Jan. 01, 2021	Dec. 31, 2020	May 31, 2020	May 29, 2020	May 18, 2020
Summary of Significant Accounting Policies
Interest rate (as a percent)	3.75%		3.75%
Convertible Debt		$ 120,700
Accumulated deficit	$ (1,997,684)	9,600		$ (1,946,488)
Additional paid-in capital	$ 6,949,938	$ 130,200		$ 3,446,650
3.75% Convertible Senior Notes
Summary of Significant Accounting Policies
Interest rate (as a percent)	3.75%				3.75%	3.75%	3.75%