Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended			9 Months Ended
	Jun. 30, 2020	Dec. 31, 2019	Feb. 28, 2019	Sep. 30, 2020
Follow-On Equity Offering
Class of Stock [Line Items]
Number of shares issued or sold (in shares)			5,500,000
Sale of stock purchase price (in dollars per share)			$ 20.00
Consideration received on transaction			$ 118.7
Over-allotment option
Class of Stock [Line Items]
Number of shares issued or sold (in shares)			825,000
Sale of stock purchase price (in dollars per share)			$ 20.00
At the Market Offering
Class of Stock [Line Items]
Number of shares issued or sold (in shares)				6,612,815
Sale of stock purchase price (in dollars per share)				$ 26.46
Consideration received on transaction				$ 170.5
Common stock maximum amount available for issuance	$ 175.0	$ 50.0