CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total USD ($)	Common Stock [Member] USD ($)	Additional Paid-In Capital [Member] USD ($)	Accumulated Deficit [Member] USD ($)	Accumulated Other Comprehensive Income [Member] USD ($)	Noncontrolling Interest [Member] USD ($)	Common Class B [Member]	Common Class B [Member] Common Stock [Member]	Preferred Class A [Member] Series A Convertible Preferred Stock [Member] USD ($)	Common Class A [Member]	Common Class A [Member] Common Stock [Member] USD ($)
BALANCE at Dec. 31, 2012	$ 631,267	$ 0	$ 1,556,250	$ (982,513)	$ 46,150	$ 5,206			$ 0		$ 6,174
BALANCE (in shares) at Dec. 31, 2012								0			77,185,129
BALANCE (in shares) at Dec. 31, 2012									1
Reclassification Of Capped Call Options	0		(2,752)	2,752
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Stock-based compensation	2,180		2,180
Shares issuance, stock-based compensation (in shares)											120,125
Shares issuance, stock-based compensation	0										10
Adjustments to Additional Paid in Capital, Share-based Compensation and Exercise of Stock Options			(10)
Preferred dividend paid-in-kind	(247)		(247)
Dividends	(446)					(446)
Net loss	(150,051)			(149,238)		(813)
Currency translation adjustment	(8,944)				(8,993)	49
Stock Issued During Period, Shares, New Issues									0		57,132,931
Stock Issued During Period, Value, New Issues	151,696		147,125						0		4,571
BALANCE at Jun. 30, 2013
BALANCE at Dec. 31, 2013	441,001	0	1,704,066	(1,262,916)	(11,829)	893			0		10,787
BALANCE (in shares) at Dec. 31, 2013							0	0		134,800,000	134,837,442
BALANCE (in shares) at Dec. 31, 2013									1
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Stock-based compensation	581		581
Shares issuance, stock-based compensation (in shares)											451,947
Shares issuance, stock-based compensation	0										36
Adjustments to Additional Paid in Capital, Share-based Compensation and Exercise of Stock Options			(36)
Preferred dividend paid-in-kind	(7,803)		(7,803)
Net loss	(101,139)			(100,353)		(786)
Currency translation adjustment	(6,937)				(6,998)	61
Adjustments to Additional Paid in Capital, Warrant Issued	(239,586)		(239,586)
BALANCE at Jun. 30, 2014	$ 565,289	$ 0	$ 1,936,394	$ (1,363,269)	$ (18,827)	$ 168			$ 0		$ 10,823
BALANCE (in shares) at Jun. 30, 2014							0	0		135,300,000	135,289,389
BALANCE (in shares) at Jun. 30, 2014									1