CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]	Preferred Stock [Member] Preferred Stock [Member]	Common Class A [Member] Common Stock [Member]	Common Class B [Member]	Common Class B [Member] Common Stock [Member]	Warrant [Member] Common Stock [Member]	2018 Warrants [Member]
BALANCE at Dec. 31, 2013	$ 441,001	$ 1,704,066	$ (1,262,916)	$ (11,829)	$ 893	$ 0	$ 10,787		$ 0
BALANCE (in shares) at Dec. 31, 2013						1
BALANCE (in shares) at Dec. 31, 2013							134,837,442		0
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Stock-based compensation	1,344	1,344
Adjustments to Additional Paid in Capital, Warrant Issued	239,586	239,586
Preferred dividend paid in kind	(16,036)	(16,036)
Share issuance, stock-based compensation		(40)					$ 40
Share issuance, stock-based compensation (in shares)							497,816
Net loss	(231,896)		(227,428)		(4,468)
Unrealized loss on derivative instruments (Note 13)	(581)			(581)
Currency translation adjustment	(156,236)			(157,199)	963
BALANCE at Dec. 31, 2014	277,182	1,928,920	(1,490,344)	(169,609)	(2,612)	$ 0	$ 10,827		$ 0
BALANCE (in shares) at Dec. 31, 2014						1
BALANCE (in shares) at Dec. 31, 2014							135,335,258		0
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Stock-based compensation	2,439	2,439
Preferred dividend paid in kind	(17,272)	(17,272)
Share issuance, stock-based compensation		(37)					$ 37
Share issuance, stock-based compensation (in shares)							468,963
Net loss	(115,572)		(114,901)		(671)
Unrealized loss on derivative instruments (Note 13)	(839)			(839)
Currency translation adjustment	(89,714)			(91,097)	1,383
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Tax	22,417			19,136	3,281
BALANCE at Dec. 31, 2015	78,641	1,914,050	(1,605,245)	(242,409)	1,381	$ 0	$ 10,864		$ 0
BALANCE (in shares) at Dec. 31, 2015						1
BALANCE (in shares) at Dec. 31, 2015							135,804,221	0	0
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Stock-based compensation	3,510	3,510
Number of Warrants Exercised											6,996,955
Stock and Warrants Issued During Period, Value, Preferred Stock and Warrants										$ 560
Adjustments to Additional Paid in Capital, Warrant Issued	6,997	6,437
Preferred dividend paid in kind	(13,701)	(13,701)
Share issuance, stock-based compensation	0	(52)					$ 52
Share issuance, stock-based compensation (in shares)							648,737
Net loss	(180,597)		(180,291)		(306)
Unrealized loss on derivative instruments (Note 13)	(3,031)			(3,031)
Currency translation adjustment	1,649			1,452	197
BALANCE at Dec. 31, 2016	$ (106,532)	$ 1,910,244	$ (1,785,536)	$ (243,988)	$ 1,272	$ 0	$ 11,476		$ 0
BALANCE (in shares) at Dec. 31, 2016						1
BALANCE (in shares) at Dec. 31, 2016							143,449,913	0	0