Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2014

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Assumptions Used to Calculate Black-Scholes Option Pricing Model for Stock Options Granted

The following table illustrates the various assumptions used to calculate the Black-Scholes option pricing model for stock options granted during the three month periods ended:

	March 31, 2014	March 31, 2013
Weighted-average risk-free interest rates:	2.01%	1.32%
Dividend yield:	—	—
Weighted-average expected life of the option:	7 years	7 years
Weighted-average expected stock price volatility:	95.16%	92.27%
Weighted-average fair value of the options granted:	$0.42	$0.33