v2.4.0.6

Debt and Debt Guarantee - Additional Information (Detail) (USD $)	1 Months Ended		3 Months Ended			6 Months Ended		12 Months Ended			1 Months Ended	3 Months Ended	12 Months Ended		1 Months Ended	6 Months Ended	12 Months Ended	1 Months Ended	6 Months Ended	12 Months Ended	2 Months Ended	12 Months Ended			1 Months Ended		6 Months Ended	12 Months Ended							6 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended		6 Months Ended
	Apr. 30, 2012	Mar. 31, 2012	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 Notes Payable - other Installment	Mar. 26, 2012 Notes Payable	Mar. 31, 2012 Notes Payable	Dec. 31, 2011 Notes Payable	Dec. 31, 2010 Notes Payable	Apr. 30, 2012 24% Note Transaction Demand Notes Payable	Jun. 30, 2012 24% Note Transaction Demand Notes Payable	Dec. 31, 2011 24% Note Transaction Demand Notes Payable	Apr. 30, 2012 6% Note Transaction Demand Notes Payable	Jun. 30, 2012 6% Note Transaction Demand Notes Payable	Dec. 31, 2011 6% Note Transaction Demand Notes Payable	Sep. 30, 2009 Convertible Debentures - 2009	Dec. 31, 2010 Convertible Debentures - 2009	Jun. 30, 2012 Convertible Debentures - 2009	Dec. 31, 2011 Convertible Debentures - 2009	Aug. 13, 2011 Convertible Debentures - 2009 Second Amended And Restated Credit Agreement	Jul. 31, 2011 Convertible Debentures - 2010	Jun. 30, 2012 Convertible Debentures - 2010	Dec. 31, 2011 Convertible Debentures - 2010	Dec. 31, 2010 Convertible Debentures - 2010	Dec. 31, 2009 Convertible Debentures - 2010	May 31, 2011 Convertible Debentures - 2010	Jul. 31, 2011 Convertible Debentures - 2010 Amended and Restated Credit Agreement	May 31, 2011 Convertible Debentures - 2010 Amended and Restated Credit Agreement	Nov. 30, 2010 Convertible Debentures - 2010 Amended and Restated Credit Agreement	Jun. 30, 2012 Convertible Debentures - 2010 Second Amended And Restated Credit Agreement	Dec. 31, 2011 Convertible Debentures - 2010 Transaction debenture 2	Mar. 31, 2012 Convertible Debentures - 2010 Transaction Debenture 1	Dec. 31, 2011 Convertible Debentures - 2010 Transaction Debenture 1	Dec. 31, 2010 Convertible Debentures - 2010 Transaction Debenture 1	Jun. 30, 2012 Convertible Debentures
Debt Instrument [Line Items]
Notes payable								$ 202,484					$ 25,000	$ 25,000			$ 71,000			$ 79,980
Debt interest rate													12.00%	12.00%			24.00%			6.00%
Accrued interest Expense			75,115		372,133	460,704	783,360					1,244	5,082			6,211	5,929		2,688	0
Note payable and accrued interest											46,819		45,575		83,140		76,929	82,668
Number of common stock due to conversion of Note payable and accrued interest											187,277				332,561			330,671
Common stock, fair market value per share											$ 0.25				$ 0.25			$ 0.25
Acquisition of mineral properties										300,000
Acquisition of mineral properties, cash paid										50,000
Acquisition of mineral properties, notes payable assumed										250,000
Number of installment for acquisition payment										3
Debt, maturity start date										Oct. 31, 2011											Aug. 13, 2010				Aug. 13, 2012
Debt, maturity end date										Dec. 31, 2011											Sep. 15, 2010				Sep. 15, 2012
Short term note from officer			39,200			39,200
Convertible debenture, face amount																					1,000,000						198,000		1,462,774							1,700,918
Convertible debenture, interest rate																					18.00%								24.00%
Convertible debenture, expected principal payment																					500,000
Convertible debenture, conversion price per share	$ 0.25	$ 0.25		$ 0.25				$ 0.25	$ 0.35												$ 0.35	$ 0.25							$ 0.90					$ 0.25
Convertible debenture, conversion price as percentage of five proceeding days of weighted average closing price																					25.00%	25.00%
Warrants issued (in shares)									442,857												2,857,142	2,857,142								2,857,142
Warrants exercise price			0.40			0.40		0.40	0.50												0.50	0.50								0.50
Number of days used to determining conversion price																					5 days	5 days
Warrant exercise term								2 years													2 years									2 years
Convertible debenture, discount to average closing price of five proceeding days																						$ 0.25
Warrants issued with debt																					581,626
Convertible debenture converted to stock (in shares)	1,725,580	10,927,289						4,363,611	1,000,000
Convertible debenture converted to stock	431,395	2,731,822				3,163,218		1,090,902	350,000
Convertible debenture																							633,306	633,306				2,164,205
Convertible debenture, maturity date																													May 17, 2011
Beneficial conversion feature issued on convertible debenture								472,377																												472,377			515,271
Amortization of Discount on convertible debenture						212,070	444,993	646,760	512,839																											260,306	202,517	386,453
Line of credit facility, maximum borrowing capacity																										1,800,000					1,500,000	2,000,000	1,800,000		3,000,000
Line of credit facility, royalty interest rate																										3.00%	6.00%	6.00%							3.00%
Line of credit facility amended payment period, due																																			1 year
Line of credit facility amended payment period																																			Nov. 17, 2012
Prepaid royalty interest																											113,164	113,164
Amortized prepaid financing charge																											42,437	35,364
Prepaid expenses						(39,812)	(4,257)																					77,800
Royalty paid																												4,418
Royalty earned																												4,418
Gain on forgiveness of debt			235,985	86,746		322,731																					77,800													158,185
Convertible debenture, discount																											$ 0	$ 212,070

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Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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