Stock based Compensation and Stock Option Plan Stock Option Activity (Details) (USD $)	9 Months Ended
	Sep. 30, 2012
Weighted-Average Exercise Price [Roll Forward]
Weighted-Average Exercise Price, Begining balance	$ 6.40
Weighted-Average Exercise Price, Granted	$ 0.83
Weighted-Average Excercise Price, Exercised	$ 0.00
Weighted-Average Exercise Price, Cancelled/expired	$ 7.25
Weighted-Average Exercise Price, Ending balance	$ 6.28
Weighted-Average Excercise Price, Exercisable at the end of period	$ 6.44
Weighted-Average Excercise Price, Vested and expected to vest at the end of period	$ 6.45
Stock Options [Member]
Number of Shares [Roll Forward]
Stock Options Number of Shares, Begining balance	793,107
Stock Options Number of Shares, Granted	30,000
Stock Options Number of Shares, Exercised	0
Stock Options Number of Shares, Cancelled/expired	(183,661)
Stock Options Number of Shares, Ending balance	639,446
Stock Options Number of Shares, Exercisable at the end of the period	568,196
Stock Options Number of Shares, Vested and expected to vest at the end of period	634,909
Average Remaining Contractual Life (Years) [Abstract]
Average Remaining Contractual Life, Ending balance (in years)	6 years 0 months 8 days
Average Remaining Contractual Life, Exercisable (in years)	5 years 10 months 6 days
Average Remaining Contractual Life, Vested and expected to vest at the end of period (in years)	5 years 10 months 4 days
Aggregate Intrinsic Value [Abstract]
Aggregate Intrinsic Value, Outstanding at the ending period, Intrinsic Value	$ 0
Aggregate Intrinsic Value, Exercisable at the ending period, Intrinsic Value	0
Aggregate Instrinsic Value, Option vested and expected to vest at the end of period, Intrinsic Value	$ 0