Consolidated Balance Sheets (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Preferred stock, par or stated value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	59,073,220	56,277,971
Common stock, shares outstanding (in shares)	59,073,220	56,277,971
Redeemable convertible preferred stock
Preferred stock, shares authorized (in shares)	9,980,000	2,930,000
Dividend rate	6.75%	6.75%
Preferred stock, shares issued (in shares)	6,843,418	2,530,000
Preferred stock, shares outstanding (in shares)	6,843,418	2,530,000