Earnings (Loss) Per Share - Schedule of Computation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net Income (Loss)	$ 25,359	$ 27,931	$ 75,726	$ 74,987
Noncontrolling interests	(1,274)	(933)	(2,969)	(1,619)
Net Income (Loss) Attributable to Stockholders	24,085	26,998	72,757	73,368
Preferred stockholder dividends	(2,085)	(2,085)	(6,253)	(6,253)
Net Income (Loss) Attributable to Common Stockholders	$ 22,000	$ 24,913	$ 66,504	$ 67,115
Shares (in thousands):
Basic: Weighted-average number of common shares outstanding (in shares)	6,947	7,175	6,990	7,195
Plus: Incremental shares from assumed conversion of dilutive instruments (in shares)	1,210	1,281	1,225	1,268
Diluted: Weighted-average number of common shares outstanding (in shares)	8,157	8,456	8,215	8,463
Earnings (Loss) per share—Basic (in $ per share)	$ 3.17	$ 3.47	$ 9.51	$ 9.33
Earnings (Loss) per Share—Diluted (in $ per share)	$ 2.95	$ 3.19	$ 8.86	$ 8.67