CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,050,000	10,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	489,950,000	489,950,000
Common stock, shares outstanding (in shares)	116,331,347	113,793,300
Series A Preferred Stock
Preferred Stock, Dividend Rate, Percentage	5.875%	5.875%
Preferred stock, shares outstanding (in shares)	3,600,000	3,600,000
Preferred Stock, Liquidation Preference, Value	$ 90,000,000	$ 90,000,000
Series B Preferred Stock
Preferred Stock, Dividend Rate, Percentage	5.875%	5.875%
Preferred stock, shares outstanding (in shares)	3,000,000	3,000,000
Preferred Stock, Liquidation Preference, Value	$ 75,000,000	$ 75,000,000
Series C Preferred Stock
Preferred Stock, Dividend Rate, Percentage	5.625%	5.625%
Preferred stock, shares outstanding (in shares)	3,450,000	3,450,000
Preferred Stock, Liquidation Preference, Value	$ 86,250,000	$ 86,250,000