Non-controlling interest (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Non-controlling interest at January 1, 2011			$ 5,293
Non-controlling share of losses	(203)	(905)	(412)	(1,906)
Non-controlling share of capital			819	0
Non-controlling share of stock-based expense			32
Non-controlling share of other comprehensive loss			32
Share consolidation of Medicsight's stock			(1,386)
Non-controlling interest at June 30, 2012	4,361		4,361
Medicsights [Member]
Non-controlling interest at January 1, 2011			5,293
Non-controlling share of losses			(381)
Non-controlling share of capital			0
Non-controlling share of stock-based expense			15
Non-controlling share of other comprehensive loss			32
Share consolidation of Medicsight's stock			(1,386)
Non-controlling interest at June 30, 2012	3,573		3,573
Mgt Gaming [Member]
Non-controlling interest at January 1, 2011			0
Non-controlling share of losses			(31)
Non-controlling share of capital			819
Non-controlling share of stock-based expense			0
Non-controlling share of other comprehensive loss			0
Share consolidation of Medicsight's stock			0
Non-controlling interest at June 30, 2012	$ 788		$ 788