Non-controlling interest (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2014	$ 2,107
Non-controlling share of net loss	(170)	(56)
Non-controlling interest at March 31, 2014	1,937
Mgt Gaming [Member]
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2014	585
Non-controlling share of net loss	(42)
Non-controlling interest at March 31, 2014	543
FanTD LLC [Member]
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2014	1,431
Non-controlling share of net loss	(108)
Non-controlling interest at March 31, 2014	1,323
MGT Interactive [Member]
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2014	96
Non-controlling share of net loss	(5)
Non-controlling interest at March 31, 2014	91
M2P Americas [Member]
Noncontrolling Interest [Line Items]
Non-controlling interest at January 1, 2014	(5)
Non-controlling share of net loss	(15)
Non-controlling interest at March 31, 2014	$ (20)