Warrants (Details) - Assumptions in Monte Carlo simulation model to estimate the fair value of the warrant liability (Warrant [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Warrants (Details) - Assumptions in Monte Carlo simulation model to estimate the fair value of the warrant liability [Line Items]
CDTi stock price (in Dollars per share)	$ 1.16	$ 2.11
Strike price (in Dollars per Share)	$ 1.25	$ 2.26
Expected volatility	80.50%	91.60%
Risk-free interest rate	1.60%	0.90%
Dividend yield
Expected life in years	5 years	6 years
Monte Carlo Simulation Model [Member]
Warrants (Details) - Assumptions in Monte Carlo simulation model to estimate the fair value of the warrant liability [Line Items]
CDTi stock price (in Dollars per share)	$ 1.51	$ 2.17
Strike price (in Dollars per Share)	$ 1.25	$ 7.92
Expected volatility	73.60%	71.30%
Risk-free interest rate	1.80%	0.30%
Dividend yield
Expected life in years	4 years 186 days	292 days