Share Based Payments (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Operating expenses
Total operating expenses	$ 1,555	$ 136	$ 3,067	$ 292
Research and Development [Member]
Operating expenses
Total operating expenses	495	35	926	94
General and Administrative [Member]
Operating expenses
Total operating expenses	$ 1,060	$ 101	$ 2,141	$ 198