Non-controlling interest (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2013	$ 2,107us-gaap_MinorityInterest	$ 768us-gaap_MinorityInterest
Fair value of non-controlling interest of FanTD (Note 4)		1,882mgt_FairValueOfNoncontrollingInterests
Acquisition of non-controlling interest in FanTD	(1,230)
Investment in MGT Interactive		191
Non-controlling share of net losses	(435)	(734)
Non-controlling share of losses	(435)
Non-controlling interest at December 31, 2014	442us-gaap_MinorityInterest	2,107us-gaap_MinorityInterest
Mgt Gaming [Member]
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2013	585	768
Investment in MGT Interactive		0
Non-controlling share of net losses		(183)
Non-controlling share of losses	(215)
Non-controlling interest at December 31, 2014	370	585
FanTD LLC [Member]
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2013	1,431	0
Fair value of non-controlling interest of FanTD (Note 4)		1,882
Acquisition of non-controlling interest in FanTD	(1,230)
Investment in MGT Interactive		0
Non-controlling share of net losses		(451)
Non-controlling share of losses	(201)
Non-controlling interest at December 31, 2014	0	1,431
MGT Interactive [Member]
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2013	96	0
Investment in MGT Interactive		191
Non-controlling share of net losses		(95)
Non-controlling share of losses	(4)
Non-controlling interest at December 31, 2014	92	96
M2P Americas [Member]
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2013	(5)	0
Investment in MGT Interactive		0
Non-controlling share of net losses		(5)
Non-controlling share of losses	(15)
Non-controlling interest at December 31, 2014	$ (20)	$ (5)

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Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

+ References

No definition available.

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+ References

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Amount of Net Income (Loss) attributable to noncontrolling interest.

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Amount after tax of other comprehensive income (loss) attributable to noncontrolling interests.

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