Stock-Based Compensation (Details 2) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Options, Outstanding (in shares)	1,127
Options, Granted (in shares)	375
Options, Exercised (in shares)	0
Options, Forfeited (in shares)	(162)
Options, Outstanding (in shares)	1,340
Options, Exercisable (in shares)	627
Weighted-Average Exercise Price, Outstanding (in dollars per share)	$ 0.02
Weighted-Average Exercise Price, Granted (in dollars per share)	$ 0.01
Weighted-Average Exercise Price, Exercised (in dollars per share)	$ 0
Weighted-Average Exercise Price, Forfeited (in dollars per share)	$ 0.03
Weighted-Average Exercise Price, Outstanding (in dollars per share)	$ 0.02
Weighted-Average Exercise Price, Exercisable (in dollars per share)	$ 0.02
Aggregate Intrinsic Value, Outstanding	$ 0
Aggregate Intrinsic Value, Exercisable	$ 0
Weighted-Average Contractual Life Remaining in Years, Outstanding	9 years
Weighted-Average Contractual Life Remaining in Years, Exercisable	8 years 8 months 12 days