Earnings Per Share Basic Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Basic earnings per share - Numerator:
Net income from continuing operations	$ 19,449	$ 7,404	$ 38,991	$ 29,442
Less: Net income attributable to noncontrolling interests	69	968	169	2,018
Net income from continuing operations attributable to the Company	19,380	6,436	38,822	27,424
Decrease/ (increase) in noncontrolling interests’ redemption values	(816)	(408)	741	438
Dividends on preferred stock	0	(3,116)	0	(3,985)
Total adjustments to income attributable to common shareholders	(816)	(3,524)	741	(3,547)
Net income from continuing operations attributable to common shareholders, treasury stock method	18,564	2,912	39,563	23,877
Net income from discontinued operations	0	(2)	0	1,696
Net income attributable to common shareholders, treasury stock method	$ 18,564	$ 2,910	$ 39,563	$ 25,573
Basic earnings per share - Denominator:
Weighted average basic common shares outstanding (in shares)	83,565,780	83,509,115	83,426,213	83,304,573
Per share data - Basic earnings per share from:
Continuing operations (in dollars per share)	$ 0.22	$ 0.03	$ 0.47	$ 0.29
Discontinued operations (in dollars per share)	0	0	0	0.02
Total attributable to common shareholders (in dollars per share)	$ 0.22	$ 0.03	$ 0.47	$ 0.31