Non-controlling interest (restated) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Non-controlling interest at January 1, 2012	$ 5,293
Non-controlling share of losses	(1,121)	(3,006)
Non-controlling share of capital	862	0
Non-controlling share of stock-based expense	32	247
Non-controlling share of other comprehensive loss	26
Acquisition of Medicsight's Ltd. stock	(4,307)
Non-controlling interest at December 31, 2012	768	5,293
Mgt Gaming [Member]
Non-controlling interest at January 1, 2012	0
Non-controlling share of losses	(94)
Non-controlling share of capital	862
Non-controlling share of stock-based expense	0
Non-controlling share of other comprehensive loss	0
Acquisition of Medicsight's Ltd. stock	0
Non-controlling interest at December 31, 2012	768
Medicsights [Member]
Non-controlling interest at January 1, 2012	5,293
Non-controlling share of losses	(1,027)
Non-controlling share of capital	0
Non-controlling share of stock-based expense	15
Non-controlling share of other comprehensive loss	26
Acquisition of Medicsight's Ltd. stock	(4,307)
Non-controlling interest at December 31, 2012	$ 0