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Stockholders' Equity - Schedule of Public Offering of Common Stock (Details) - USD ($) $ in Thousands	1 Months Ended		9 Months Ended
	Feb. 29, 2020	Jan. 31, 2020	Sep. 30, 2020	Sep. 30, 2019
Class of Stock [Line Items]
Net Proceeds			$ 511,924	$ 632,248
Underwritten Public Offering | Common Stock
Class of Stock [Line Items]
Shares Issued (in shares)	50,600,000	34,500,000
Net Proceeds	$ 305,274	$ 206,650

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