EARNINGS PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2012		Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Jul. 03, 2012 T W Investor [Member]
Convertible Preferred Stock, Shares Issued upon Conversion							11,211,449
Net loss attributable to CME Ltd.	$ (32,049)		$ (82,074)	$ (41,485)	$ (102,220)
Weighted average outstanding shares of common stock	88,134,000	[1]	64,393,000	73,065,000	64,382,000
Dilutive Effect of employee stock options and RSUs	0		0	0	0
Weighted average outstanding shares of common stock - diluted	88,134,000		64,393,000	73,065,000	64,382,000
Net loss per share:
Basic	$ (0.36)		$ (1.27)	$ (0.57)	$ (1.59)
Diluted	$ (0.36)		$ (1.27)	$ (0.57)	$ (1.59)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount				3,106,501		3,763,481

[1] (1) For the purpose of computing basic earnings per share, the 11,211,449 shares of Class A common stock underlying the Preferred Share are included in the weighted average outstanding shares of common stock - basic, primarily because the holder of the Preferred Share is entitled to receive dividends payable when dividends are declared by the Board of Directors with respect to any shares of the common stock.