Condensed Consolidated Statements of Stockholders' Deficiency - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance (in shares)		127,739,481
Beginning Balance		$ (253,272)
Net income	$ 31,546	27,321
Total other comprehensive loss	(1,485)	(1,361)
Comprehensive income	30,061	25,960
Distributions and dividends on common stock		(106,334)
Issuance of common stock		43,230
Cancellation of shares under share lending agreement		0
Stock-based compensation		6,028
Distributions to non-controlling interest		(133)
Ending Balance	$ (284,521)	$ (284,521)
Beginning Balance (in shares)	128,934,081	128,934,081
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance (in shares)		127,739,481
Beginning Balance		$ 12,774
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	$ 12,893	$ 12,893
Beginning Balance (in shares)	128,934,081	128,934,081
Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		$ 0
Distributions and dividends on common stock		(49,139)
Issuance of common stock		43,030
Cancellation of shares under share lending agreement		81
Stock-based compensation		6,028
Ending Balance	$ 0	0
Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		(333,529)
Net income		22,584
Distributions and dividends on common stock		(57,195)
Ending Balance	(368,140)	(368,140)
Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		(11,245)
Total other comprehensive loss		(1,361)
Ending Balance	(12,606)	(12,606)
Non-controlling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance		78,728
Net income		4,737
Distributions to non-controlling interest		(133)
Ending Balance	$ 83,332	$ 83,332