Equity (Details 2) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Summary of stock options outstanding
Stock Options Outstanding, Beginning Balance	72,012	69,537
Stock Options, Granted	35,633	2,500
Stock Options, Exercised
Stock Options, Forfeited, or expired
Stock Options Outstanding, Ending Balance	107,645	72,037
Stock Options, Vested and expected to vest at ending balance	104,018	65,007
Options exercisable	59,733	48,445
Weighted Average Exercise Price, Beginning Period	$ 0.04	$ 0.05
Weighted Average Exercise Price, Granted	$ 0.02	$ 0.03
Weighted Average Exercise Price, Exercised
Weighted Average Exercise Price, Forfeited, or expired
Weighted Average Exercise Price, Ending Period	$ 0.04	$ 0.05
Weighted Average Exercise Price, Vested and expected to vest at ending balance	$ 0.04	$ 0.05
Weighted Average Exercise Price, Exercisable at ending balance	$ 0.05	$ 0.05
Weighted Average Remaining Contractual Term, ending balance	4 years 10 months 13 days	4 years 10 months 1 day
Weighted Average Remaining Contractual Term, vested and expected to vest at ending balance	4 years 9 months 26 days	4 years 4 months 28 days
Weighted Average Remaining Contractual Term, excercisable at ending balance	3 years 8 months 1 day	5 years 0 months 2 days
Aggregate Intrinsic Value, Beginning Balance
Aggregate Intrinsic Value, Granted		7
Aggregate Intrinsic Value, Exercised
Aggregate Intrinsic Value, Forfeited or expired
Aggregate Intrinsic Value, Ending Balance		7
Aggregate Intrinsic Value, Vested and expected to vest at ending balance		7
Aggregate Intrinsic Value, Exercisable at ending balance