EARNINGS PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Net income / (loss) attributable to CME Ltd.	$ 3,956	$ 968	$ (9,436)	$ (20,146)
Weighted average outstanding shares of common stock	66,501,000	64,384,000	65,447,000	64,377,000
Dilutive Securities, Effect on Basic Earnings Per Share	31,000	117,000	0	0
Common Stock and Common Stock Equivalents	66,532,000	64,501,000	65,447,000	64,377,000
Net income / (loss) per share:
Basic	$ 0.06	$ 0.02	$ (0.14)	$ (0.31)
Diluted	$ 0.06	$ 0.02	$ (0.14)	$ (0.31)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount			3,193,869		3,763,481