Effect on Consolidated Balance Sheet (Detail) (USD $)	Sep. 30, 2012	Dec. 31, 2011		Sep. 30, 2011
Current liabilities:
Accounts payable	$ 1,333,684	$ 1,175,462		$ 1,097,637
Accrued liabilities	567,076	359,715		275,608
Notes payable	0	160,794		50,640
Convertible debt		772,500		772,500
Total current liabilities	2,920,760	4,527,548		4,774,588
Fair value of 10% convertible preferred stock warrants	85,594	487,555		487,555
Total liabilities	8,102,931	5,015,103		5,262,143
Commitments and contingencies
Temporary Equity				6,594,341
Stockholders' deficit:
Common stock, no par value; authorized, 100,000,000 shares; 25,007,261 shares issued and outstanding at December 31, 2011	26,706,533	24,410,071		23,006,845
Accumulated deficit	(33,700,188)	(29,645,934)		(28,897,251)
Total stockholders' deficit	(6,993,655)	(5,235,863)		(5,890,406)
Total liabilities and stockholders' deficit	6,972,360	5,541,996		5,966,078
Scenario, Previously Reported
Current liabilities:
Accounts payable		1,175,462		1,097,637
Accrued liabilities		359,715		275,608
Notes payable		160,794		50,640
Derivative liability - conversion option				2,396,300
Recognized Gain On Change In Fair Value Of Derivative Liability
Recorded As Fair Value Of Bonus Warrants At Date Of Issuance
Convertible debt		566,785		463,928
Reverse Of Amortization Of Debt Discount
Total current liabilities		4,251,490		4,284,113
Fair value of 10% convertible preferred stock warrants		487,555		487,555
Total liabilities		4,739,045		4,771,668
Commitments and contingencies
Stockholders' deficit:
Common stock, no par value; authorized, 100,000,000 shares; 25,007,261 shares issued and outstanding at December 31, 2011		23,660,071		22,256,845
Reversed Improper Recording Of Debt Discount
Reversed Improper Recording Of Fair Value Of Bonus Warrants At Issuance
Recorded Fair Value Of Bonus Warrant At Date Of Issuance
Accumulated deficit		(28,619,876)		(27,656,776)
Reverse Improper Recording Of and Amortization Of Debt Discount
Record Fair Value Of Bonus Warrants As Of Amendment Date As Component Of Reacquisition Price Of New Debt
Recognized Gain On Change In Fair Value Of Derivative Liability Associated With Bonus Warrants At Period End
Reversed Improper Recording Of Fair Value Of Bonus Warrants At Issuances
Total stockholders' deficit		(4,959,805)		(5,399,931)
Total liabilities and stockholders' deficit		5,541,996		5,966,078
Restatement Adjustment
Current liabilities:
Accounts payable
Accrued liabilities
Notes payable
Derivative liability - conversion option
Recognized Gain On Change In Fair Value Of Derivative Liability		(492,111)	[1]	(428,260)
Recorded As Fair Value Of Bonus Warrants At Date Of Issuance		(234,731)	[2]	(187,022)
Convertible debt		600,000	[3]	600,000
Reverse Of Amortization Of Debt Discount		(394,285)	[4]	(291,428)
Total current liabilities		276,058		490,475
Fair value of 10% convertible preferred stock warrants
Total liabilities		276,058		490,475
Commitments and contingencies
Stockholders' deficit:
Common stock, no par value; authorized, 100,000,000 shares; 25,007,261 shares issued and outstanding at December 31, 2011		1,350,000	[5]	1,350,000
Reversed Improper Recording Of Debt Discount		(600,000)	[3]	(600,000)
Reversed Improper Recording Of Fair Value Of Bonus Warrants At Issuance		(234,731)	[6]	(187,022)
Recorded Fair Value Of Bonus Warrant At Date Of Issuance		234,731	[2]	187,022
Accumulated deficit		(1,350,000)	[5]	(1,350,000)
Reverse Improper Recording Of and Amortization Of Debt Discount		394,285	[4]	291,428
Record Fair Value Of Bonus Warrants As Of Amendment Date As Component Of Reacquisition Price Of New Debt		(797,185)	[7]	(797,185)
Recognized Gain On Change In Fair Value Of Derivative Liability Associated With Bonus Warrants At Period End		492,111	[1]	428,260
Reversed Improper Recording Of Fair Value Of Bonus Warrants At Issuances		234,731	[6]	187,022
Total stockholders' deficit		(276,058)		(490,475)
Total liabilities and stockholders' deficit
Debt Conversion
Current liabilities:
Derivative liability - conversion option		113,271
Debt Conversion | Scenario, Previously Reported
Current liabilities:
Derivative liability - conversion option		113,271		797,185
Warrant
Current liabilities:
Derivative liability - conversion option		1,875,463		2,396,300
Warrant | Scenario, Previously Reported
Current liabilities:
Derivative liability - conversion option		1,875,463		(428,260)
Bonus Warrants
Current liabilities:
Derivative liability - conversion option		70,343		181,903
Bonus Warrants | Restatement Adjustment
Current liabilities:
Derivative liability - conversion option		797,185	[7]	(187,022)
Convertible Preferred Stock
Current liabilities:
Temporary Equity	5,863,084	5,520,256
Convertible Preferred Stock | Scenario, Previously Reported
Current liabilities:
Temporary Equity		5,520,256		6,594,341
Redeemable Common Stock
Current liabilities:
Temporary Equity		242,500
Redeemable Common Stock | Scenario, Previously Reported
Current liabilities:
Temporary Equity		$ 242,500

[1] to recognize the gain on the change in the fair value of the derivative liability associated with the bonus warrants at period end.

[2] to record the fair value of bonus warrants at date of issuance.

[3] to reverse the improper recording of debt discount.

[4] to reverse the improper recording of and amortization of debt discount.

[5] to record the difference between the reacquisition price of the new debt and the net carrying amount of the extinguished debt at the amendment date.

[6] to reverse the improper recording of the fair value of bonus warrants at issuance.

[7] to record the fair value of the bonus warrants as of the amendment date as a component of the reacquisition price of the new debt.