Equity - At-the-Market Offering Program Narrative (Details) - USD ($)		2 Months Ended
	May 12, 2020	Sep. 30, 2020	Sep. 17, 2020	Jul. 22, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Payments of stock issuance costs	$ 8,900,000
Common stock		$ 28,000			$ 7,000
ATM Program
Class of Stock [Line Items]
Shares available for sale (in shares)			9,000,000	9,000,000
Number of shares sold (in shares)		9,000,000
Consideration received on sale of shares		$ 156,700,000
Payments of stock issuance costs		5,000,000.0
Common stock		$ 900