Shareholders' Equity and Earnings Per Common Share Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net income	$ (3,328)	$ 24,023	$ 24,920	$ 19,237
Net (income) loss attributable to redeemable noncontrolling interests	288	(3,574)	(3,099)	(2,980)
Net loss attributable to noncontrolling interests	0	125	0	127
Net income (loss) attributable to common shareholders	3,040	(20,574)	(21,821)	(16,384)
Distributions to participating securities	(996)	(218)	(996)	(361)
Net income (loss) available to common shareholders — basic and diluted	$ (4,036)	$ 20,356	$ 20,825	$ 16,023
Weighted average number of common shares outstanding — basic and diluted	131,754	117,955	127,189	117,955
Earnings (loss) per common share:
Earnings Per Share, Basic	$ (0.03)	$ 0.17	$ 0.16	$ 0.14
Earnings Per Share, Diluted	$ (0.03)	$ 0.17	$ 0.16	$ 0.14