Earnings Per Share - Reconciliation of Basic and Diluted Net Income Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income (loss) from continuing operations	$ 4,566	$ (949)	$ 12,204	$ 4,301	$ (8,761)	$ (527)	$ 876	$ (5,475)	$ 20,122	$ (13,887)	$ 9,232
Net income from continuing operations attributable to non-controlling interests									1,761	(612)	2,603
Net income allocated to participating securities									472	0	123
Net income (loss) from discontinued operations					$ 9,289	$ 0	$ 0	$ 34,481	0	43,770	(3,998)
Net income (loss) from discontinued operations attributable to non-controlling interests									0	6,562	(973)
Net income allocated to participating securities									0	0	(56)
Common stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income (loss) from continuing operations attributable to Common Shares									17,889	(13,275)	6,506
Net income (loss) from discontinued operations attributable to Common Shares									0	37,208	(2,969)
Net income (loss) attributable to Common Shares - basic									17,889	23,933	3,537
Net income (loss) attributable to Common Shares - diluted									$ 17,166	$ 23,933	$ 4,145
Weighted Average Number of Shares Outstanding, Basic
Weighted average number of shares of Common Stock outstanding - basic	34,562,219	34,552,171	34,527,230	34,673,054	35,921,632	36,402,129	36,593,154	29,861,496	34,578,292	34,715,852	29,134,190
Weighted average number of incremental shares of Common Stock issuable from exchangeable interests and contingent considerations									0	0	8,172,442
Weighted Average Number of Shares Outstanding, Diluted
Weighted average number of shares of Common Stock outstanding - diluted	34,578,357	34,552,171	34,527,230	34,673,054	35,921,632	36,402,129	37,386,319	29,861,496	34,578,292	34,715,852	37,306,632
Basic:
Basic, continuing operations, net	$ 0.12	$ (0.04)	$ 0.33	$ 0.11	$ (0.25)	$ (0.02)	$ 0.02	$ (0.15)	$ 0.52	$ (0.38)	$ 0.22
Basic, discontinued operations, net	0.00	0.00	0.00	0.00	0.26	0.00	0.00	0.94	0.00	1.07	(0.10)
Basic earnings per share	0.12	(0.04)	0.33	0.11	0.01	(0.02)	0.02	0.79	0.52	0.69	0.12
Diluted:
Diluted, continuing operations, net	0.11	(0.04)	0.32	0.11	(0.25)	(0.02)	0.02	(0.15)	0.50	(0.38)	0.21
Diluted, discontinued operations, net	0.00	0.00	0.00	0.00	0.26	0.00	0.00	0.94	0.00	1.07	(0.10)
Diluted earnings per share	$ 0.11	$ (0.04)	$ 0.32	$ 0.11	$ 0.01	$ (0.02)	$ 0.02	$ 0.79	$ 0.50	$ 0.69	$ 0.11
Securities of subsidiaries
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive Securities, Effect on Basic Earnings Per Share									$ (723)	$ 0	$ (128)
Adjustments to income relating to exchangeable interests, net of tax [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive Securities, Effect on Basic Earnings Per Share									$ 0	$ 0	$ 736