Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2013

Share-Based Compensation and Employee Stock Purchases [Abstract]

Schedule of assumptions used to determine the fair value of stock options granted during the period

	Three Months Ended March  31, 2012
Average risk free interest rate		1.1	%
Expected dividend yield		—
Expected lives (years)		5.8
Expected volatility		67.0	%
Weighted average grant date fair value of options granted during the period (per share)		$ 0.69
Weighted average exercise price of options granted during the period (per share)		$ 1.15