(2) Schedule of Stock Option Activity (Details) (USD $)	3 Months Ended			6 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Notes to Financial Statements
Number of Options Outstanding, Beginning	14,456,732	14,456,722		14,456,722
Number of Options Granted	408,000	521,200
Number of Options Exercised	(187,680)	(82,900)
Number of Options Cancelled	(666,380)	(10,000)
Number of Options Forfeited	(1,846,570)	(428,290)
Number of Options Outstanding, Ending	12,164,102	14,456,732		12,164,102
Number of Options Exercisable	4,146,502			4,146,502
Weighted Average Exercise Price Outstanding, Beginning	$ 4.83	$ 4.95		$ 4.95
Weighted Average Exercise Price Granted	$ 3.21	$ 2.94
Weighted Average Exercise Price Exercised	$ 2.24	$ 2.45
Weighted Average Exercise Price Canceled	$ 5.09	$ 7.98
Weighted Average Exercise Price Forfeited	$ 4.28	$ 6.88
Weighted Average Exercise Price Outstanding, Ending	$ 4.89	$ 4.83		$ 4.89
Weighted Average Exercise Price Exercisable	$ 5.69			$ 5.69
Weighted Average Remaining Contractual Life (in years) Outstanding	6 years 4 months 6 days	6 years 12 months
Weighted Average Remaining Contractual Life (in years) Exercisable	5 years 2 months
Aggregate Intrinsic Value Outstanding, Beginning	$ 5,497,712
Aggregate Intrinsic Value Exercised	188,609		56,526	266,862	314,822
Aggregate Intrinsic Value Outstanding, Ending	453,155	5,497,712		453,155
Aggregate Intrinsic Value Exercisable	$ 432,455			$ 432,455