Unaudited Condensed Consolidated Statements of Stockholders' Deficit - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Common Stock 5.75% Convertible Notes	Additional Paid-in Capital	Additional Paid-in Capital 5.75% Convertible Notes	Accumulated Losses	Noncontrolling Interest	AOCI Attributable to Parent	Treasury Stock
Beginning Balance at Dec. 31, 2018		$ 11		$ 1,037,372		$ (312,796)	$ 26,999	$ (53,068)	$ (844,253)
Beginning Balance (in shares) at Dec. 31, 2018		11,162
Shares issued on vesting of restricted stock (in shares)		87
Shares issued on conversion of 5.75% Convertible Notes	$ 2,001		$ 1		$ 2,000
Shares issued on conversion of 5.75% Convertible Notes (in shares)		958
Foreign currency translation				(38)				(1,724)
Change in redemption value of redeemable non-controlling interest						391
Compensation expense in connection with restricted stock				140
Reclass from redeemable NCI							3,903
Net (loss) income						17,945	3,361
Distributions to joint ventures							(2,649)
Shares repurchased on vesting of restricted stock									(56)
Ending Balance (in shares) at Mar. 31, 2019		12,207
Ending Balance at Mar. 31, 2019	(122,461)	$ 12		1,039,474		(294,460)	31,614	(54,792)	(844,309)
Beginning Balance at Dec. 31, 2019	(256,359)	$ 15		1,045,307		(429,117)	26,521	(54,643)	(844,442)
Beginning Balance (in shares) at Dec. 31, 2019		15,138
Shares issued on vesting of restricted stock (in shares)		196
Foreign currency translation								(2,369)
Change in redemption value of redeemable non-controlling interest				(394)
Compensation expense in connection with restricted stock				172
Net (loss) income						(21,483)	3,333
Distributions to joint ventures							(1,183)
Shares repurchased on vesting of restricted stock									(65)
Ending Balance (in shares) at Mar. 31, 2020		15,334
Ending Balance at Mar. 31, 2020	$ (278,348)	$ 15		$ 1,045,085		$ (450,600)	$ 28,671	$ (57,012)	$ (844,507)