Non-controlling interest (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2015	$ 442
Non-controlling share of loss / (income)	(103)
Transfers from non-controlling interest	(96)	$ 0
Non-controlling interest at September 30, 2015	243
MGT Gaming [Member]
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2015	370
Non-controlling share of loss / (income)	(105)
Non-controlling interest at September 30, 2015	265
MGT Interactive [Member]
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2015	92
Non-controlling share of loss / (income)	4
Transfers from non-controlling interest	(96)
Non-controlling interest at September 30, 2015	0
M2P Americas [Member]
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2015	(20)
Non-controlling share of loss / (income)	(2)
Non-controlling interest at September 30, 2015	$ (22)