Equity (Details 2) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Summary of stock options outstanding
Stock Options Outstanding, Beginning Balance	69,537	44,529
Stock Options, Granted	2,500	26,241
Stock Options, Exercised	0	0
Stock Options, Forfeited, or expired		(500)
Stock Options Outstanding, Ending Balance	72,037	70,270
Stock Options, Vested and expected to vest at ending balance	65,007	70,270
Options exercisable	48,445	27,036
Weighted Average Exercise Price, Beginning Period	$ 0.05
Weighted Average Exercise Price, Granted	$ 0.03	$ 0.04
Weighted Average Exercise Price, Exercised
Weighted Average Exercise Price, Forfeited, or expired		$ 0.09
Weighted Average Exercise Price, Ending Period	$ 0.05	$ 0.05
Weighted Average Exercise Price, Vested and expected to vest at ending balance	$ 0.05	$ 0.05
Weighted Average Exercise Price, Exercisable at ending balance	$ 0.05	$ 0.05	$ 0.05
Weighted Average Remaining Contractual Term, ending balance	7 years 10 months 1 day	5 years 9 months
Weighted Average Remaining Contractual Term, vested and expected to vest at ending balance	4 years 10 months 1 day	5 years 0 months 2 days
Weighted Average Remaining Contractual Term, excercisable at ending balance	5 years 0 months 2 days	5 years 0 months 2 days
Aggregate Intrinsic Value, Beginning Balance		$ 2,230
Aggregate Intrinsic Value, Granted	7	1,179
Aggregate Intrinsic Value, Exercised
Aggregate Intrinsic Value, Forfeited or expired		43
Aggregate Intrinsic Value, Ending Balance	7	3,367
Aggregate Intrinsic Value, Vested and expected to vest at ending balance	7	3,367
Aggregate Intrinsic Value, Exercisable at ending balance		$ 1,043