INTERIM CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	450,133,000	450,133,000
Common stock, shares issued (in shares)	68,962,873	64,580,118
Common stock, shares outstanding (in shares)	68,962,873	64,580,118
Series A Redeemable Perpetual Preferred Stock
Dividend rate (as a percent)	7.125%
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, liquidation preference (in dollars per share)	$ 25.00	$ 25.00
Preferred stock, shares authorized (in shares)	4,600,000	4,600,000
Preferred stock, shares issued (in shares)	4,280,000	4,280,000
Preferred stock, shares outstanding (in shares)	4,280,000	4,280,000
Series B Convertible Perpetual Preferred Stock
Dividend rate (as a percent)	6.50%
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, liquidation preference (in dollars per share)	$ 100.00	$ 100.00
Preferred stock, shares authorized (in shares)	3,162,500	3,162,500
Preferred stock, shares issued (in shares)	3,162,500	3,162,500
Preferred stock, shares outstanding (in shares)	3,162,500	3,162,500