Condensed Consolidated Statements of Stockholders' Deficiency - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance (in shares)		127,739,481
Beginning Balance		$ (253,272)
Net income	$ 20,478	47,799
Total other comprehensive loss	644	(717)
Comprehensive income	21,122	47,082
Distributions and dividends on common stock		(159,437)
Surrender of shares in connection with restricted stock vesting		(4,100)
Effect of stock dividend		0
Issuance of common stock		43,230
Cancellation of shares under share lending agreement		0
Stock-based compensation		8,456
Distributions to non-controlling interest		(133)
Ending Balance	$ (318,174)	$ (318,174)
Beginning Balance (in shares)	135,178,626	135,178,626
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance (in shares)		127,739,481
Beginning Balance		$ 12,774
Surrender of shares in connection with restricted stock vesting (in shares)		191,967
Surrender of shares in connection with restricted stock vesting		$ (19)
Effect of stock dividend (in shares)		6,436,512
Effect of stock dividend		$ 644
Issuance of common stock (in shares)		2,000,000
Issuance of common stock		$ 200
Cancellation of shares under share lending agreement (in shares)		(805,400)
Cancellation of shares under share lending agreement		$ (81)
Ending Balance	$ 13,518	$ 13,518
Beginning Balance (in shares)	135,178,626	135,178,626
Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		$ 0
Distributions and dividends on common stock		(47,486)
Surrender of shares in connection with restricted stock vesting		(4,081)
Issuance of common stock		43,030
Cancellation of shares under share lending agreement		81
Stock-based compensation		8,456
Ending Balance	$ 0	0
Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		(333,529)
Net income		41,848
Distributions and dividends on common stock		(111,951)
Effect of stock dividend		(644)
Ending Balance	(404,276)	(404,276)
Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		(11,245)
Total other comprehensive loss		(717)
Ending Balance	(11,962)	(11,962)
Non-controlling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		78,728
Net income		5,951
Distributions to non-controlling interest		(133)
Ending Balance	$ 84,546	$ 84,546