Operating Segments - Profit by Reportable Segment to Net Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total profit from segments	$ (3,677)	$ (5,168)	$ (8,771)	$ (3,002)	$ 3,938	$ (2,303)	$ 1,491	$ (3,238)	$ (20,618)	$ (112)	$ (390)
Depreciation and amortization									(15,029)	(18,579)	(15,588)
General and administrative									(15,942)	(10,614)	(11,089)
Advisory Fee									(13,985)	(9,409)	(9,216)
Other income									4,231	7,117	12,757
Interest Income									23,421	23,098	25,955
Interest Expense									(29,080)	(35,004)	(39,860)
Loss on foreign currency transactions									(6,175)	(13,378)	(15,108)
Loss on extinguishment of debt									(1,451)	0	(5,219)
Equity in income (loss) from unconsolidated joint ventures									14,634	(379)	(2,313)
Gain on sale or write-down of assets									24,647	36,895	15,192
Income tax provision									1,067	147	0
Net income (loss)									6,445	11,267	(21,743)
Operating Segments
Segment Reporting Information [Line Items]
Total profit from segments									16,948	27,549	20,537
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Depreciation and amortization									(11,870)	(14,755)	(13,379)
General and administrative									(15,942)	(10,614)	(11,089)
Advisory Fee									(13,985)	(9,409)	(9,216)
Other income									4,231	7,117	12,757
Interest Income									23,421	23,098	25,955
Interest Expense									(29,080)	(35,004)	(39,860)
Loss on foreign currency transactions									(6,175)	(13,378)	(15,108)
Loss on extinguishment of debt									(1,451)	0	(5,219)
Equity in income (loss) from unconsolidated joint ventures									14,634	(379)	(2,313)
Gain on sale or write-down of assets									24,647	36,895	15,192
Income tax provision									$ 1,067	$ 147	$ 0