Non-controlling interest (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2014			$ 2,107
Acquisition of non-controlling interest in FanTD			(1,151)
Non-controlling share of losses	71	232	373	379
Non-controlling interest at September 30, 2014	583		583
Mgt Gaming [Member]
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2014			585
Acquisition of non-controlling interest in FanTD			0
Non-controlling share of losses			(154)
Non-controlling interest at September 30, 2014	431		431
FanTD LLC [Member]
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2014			1,431
Acquisition of non-controlling interest in FanTD			(1,151)
Non-controlling share of losses			(200)
Non-controlling interest at September 30, 2014	80		80
MGT Interactive [Member]
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2014			96
Acquisition of non-controlling interest in FanTD			0
Non-controlling share of losses			(4)
Non-controlling interest at September 30, 2014	92		92
M2P Americas [Member]
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2014			(5)
Acquisition of non-controlling interest in FanTD			0
Non-controlling share of losses			(15)
Non-controlling interest at September 30, 2014	$ (20)		$ (20)