EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income from continuing operations		$ 13,522	$ 10,609	$ 69,351	$ 41,040
Net loss attributable to noncontrolling interests		223	80	111	274
Less: preferred share accretion paid in kind (Note 13)		0	0	0	(4,777)
Less: income allocated to Series B Preferred Shares		4,063	3,168	20,549	12,243
Income from continuing operations available to common shareholders, net of noncontrolling interest		9,682	7,521	48,913	24,294
Income from discontinued operations, net of tax		0	57,882	0	60,548
Net income attributable to CME Ltd. available to common shareholders — basic		9,682	48,247	48,913	64,552
Net income attributable to CME Ltd. available to common shareholders — diluted		$ 9,700	$ 48,307	$ 48,990	$ 67,754
Weighted average outstanding shares of common stock - basic (in shares)	[1]	264,833,000	263,829,000	264,536,000	219,267,000
Dilutive effect of common stock warrants, employee stock options and RSUs (in shares)		1,696,000	1,111,000	1,404,000	35,998,000
Weighted average outstanding shares of common stock - diluted (in shares)		266,529,000	264,940,000	265,940,000	255,265,000
Net income per share:
Continuing operations — basic		$ 0.04	$ 0.03	$ 0.18	$ 0.11
Continuing operations — diluted		0.04	0.03	0.18	0.10
Discontinued operations — basic		0	0.15	0	0.18
Discontinued operations — diluted		0	0.15	0	0.17
Attributable to CME Ltd. — basic		0.04	0.18	0.18	0.29
Attributable to CME Ltd. — diluted		$ 0.04	$ 0.18	$ 0.18	$ 0.27
Series B Preferred Shares
Dilutive effect of employee stock options, RSUs and Series B Preferred Shares		$ (18)	$ (60)	$ (77)	$ (3,202)
Common Class A [Member] | T W Investor [Member]
Net income per share:
Incremental common shares attributable to dilutive effect of conversion of preferred stock (in shares)		11,211,449	11,211,449	11,211,449	11,211,449
Discontinued Operations, Held-for-sale [Member]
Less: income allocated to Series B Preferred Shares		$ 0	$ (17,156)	$ 0	$ (20,290)

[1] ⁽¹⁾  For the purpose of computing basic earnings per share, the 11,211,449 shares of Class A common stock underlying the Series A Preferred Share are included in the weighted average outstanding shares of common stock - basic, because the rights of the Series A Preferred Share are considered substantially similar to that of our Class A common stock.