Redemption of Preferred Stock (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Class of Stock [Line Items]
Excess of redemption value over carrying value of preferred shares redeemed		$ 0	$ 0	$ 13,373
Class F Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividend rate (as a percent)	6.625%
Excess of redemption value over carrying value of preferred shares redeemed				$ 13,400