Mortgage and Loans Payable - Additional Information (Detail) (USD $)	6 Months Ended		9 Months Ended	12 Months Ended			0 Months Ended	9 Months Ended		1 Months Ended	9 Months Ended	1 Months Ended	9 Months Ended			9 Months Ended						0 Months Ended				1 Months Ended	9 Months Ended			1 Months Ended	9 Months Ended		9 Months Ended			9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Coins	Dec. 31, 2013	Jul. 31, 2013	May 10, 2012	May 07, 2014 Revolving Credit Facility [Member]	Sep. 30, 2014 Revolving Credit Facility [Member]	Sep. 30, 2014 First Mortgage [Member]	Jul. 31, 2013 Term Loan [Member]	Sep. 30, 2014 Term Loan [Member]	Jul. 31, 2013 Project Term Loans [Member] oz	Sep. 30, 2014 Project Term Loans [Member] Subsidiaries Equity	Aug. 14, 2014 Project Term Loans [Member]	May 31, 2014 Project Term Loans [Member]	Sep. 30, 2014 Project Term Loans [Member] Minimum [Member]	Sep. 30, 2014 Project Term Loans [Member] Maximum [Member]	Sep. 30, 2014 Project Term Loans [Member] Oceanica Resources S. de. R.L [Member]	Jul. 31, 2013 Project Term Loans [Member] Gairsoppa [Member]	Aug. 14, 2014 Project Term Loans [Member] First Tranche [Member]	Aug. 14, 2014 Project Term Loans [Member] Second Tranche [Member]	Oct. 01, 2014 Project Term Loans [Member] Second Tranche [Member] Subsequent Event [Member]	Oct. 01, 2014 Project Term Loans [Member] Second Tranche [Member] Subsequent Event [Member]	Oct. 01, 2015 Project Term Loans [Member] Second Tranche [Member] Scenario, Forecast [Member] Subsequent Event [Member]	Aug. 14, 2014 Project Term Loans [Member] Third Tranche [Member]	May 31, 2008 Mortgages Payable [Member]	Sep. 30, 2014 Mortgages Payable [Member]	Jul. 11, 2008 Mortgages Payable [Member]	May 31, 2008 Mortgages Payable [Member] First Mortgage [Member]	Nov. 30, 2011 Senior Convertible Notes [Member] Investor	Sep. 30, 2014 Senior Convertible Notes [Member]	May 10, 2012 Senior Convertible Notes [Member]	Sep. 30, 2014 Senior Convertible Notes [Member] Lender [Member]	Sep. 30, 2014 Senior Convertible Note [Member]	Dec. 31, 2013 Senior Convertible Note [Member]	Sep. 30, 2014 Additional Note [Member]	Jan. 02, 2013 Additional Note [Member]	May 10, 2012 Additional Note [Member]
Debt Instrument [Line Items]
Basis spread on variable rate, points					0.75%					5.00%			5.00%														0.01%	0.75%
Debt instrument description											one month LIBOR rate plus 500 basis points		One-month LIBOR rate plus 500 basis points
Maturity date								May 31, 2015			Jul. 31, 2016		Jul. 24, 2014													May 14, 2015	Jul. 11, 2013
Periodic payment										$ 500,000																$ 5,080
Secured collateral			24,700
Value of secured collateral, percent			40.00%
Outstanding amount mortgage loan											4,000,000
Loan amount borrowed																				5,000,000									679,000							2,347,826
Remaining loan amount not yet taken																					2,500,000				2,500,000
Company's consolidated debt						8,000,000								10,000,000	10,000,000															10,000,000								8,000,000
Received the Second Tranche on this loan facility																						2,500,000
Interest rate, stated percentage																							8.00%	11.00%		6.45%												9.00%
Number shares issued to lender, shares				24,000,000														100,000
Number shares issued to lender, value																		1,000,000
Initial principal amount of the note, stated percentage maximum																50.00%	100.00%
Conversion of shares													1
Conversion price of share purchase option													$ 1.00																			$ 3.17		$ 3.74			$ 3.17	$ 3.74
Number of shares issued as collateral													1.0
Carrying value for note payable													3,958,258	3,918,254
Number of whole owned subsidiaries													2
Amortization of components included in interest expense													40,004
Marketing program compensation expenses percentage yet to recognize													5.00%
Credit facility agreement							10,000,000
Credit agreement margin LIBOR rate							5.00%
Interest rate description			Prime rate plus three-fourths of one percent (0.75%)					One month LIBOR rate plus 500 basis points																			Prime rate plus three-fourths of one percent (0.75%)
Origination fee payable							50,000
Restricted cash deposit							500,000						500,000
Outstanding loan balance								7,684,514
Company's consolidated debt									549,799			10,000,000															1,151,500	2,580,000
Loan origination fee paid at closing													50,000
Project term loan collateral value																			10,000,000
Loss recovered												1,800,000
Periodic payments, principal			10,750																								10,750
New maturity date of mortgage loan																											Jul. 31, 2016
Warrant issued to purchase common stock	1,302,083		1,302,083																											1,302,083
Original principal amount of repurchased note																														5,000,000
Debt related expenses																															545,000		45,000
Number of institutional investor under securities purchase agreement																														1
Indebtedness interest rate per year																															8.00%
Indebtedness interest rate per year under default condition																															15.00%
Original principal installments																															434,783
Note repayment commencing date																															Jul. 08, 2012
Debt instrument conversion reset conversion price description																																		The reset conversion price applicable to the Initial Note was to be adjusted to the lesser of (a) the then current conversion price and (b) the greater of (i) $1.44 and (ii) 110.0% of the market price of our common stock on the six-month anniversary of the initial closing date (as applicable, the "Conversion Price").
Debt instrument conversion price																																		$ 1.44
Debt instrument conversion price, percentage			125.00%																												110.00%			110.00%
Debt instrument amortization payment description																															The conversion rate applicable to any amortization payment that we make in shares of our common stock was the lower of (a) the Conversion Price and (b) a price equal to 85.0% of the average for a ten-day period immediately prior to the applicable amortization date of the volume-weighted average price of our shares of common stock.
Volume-weighted average price, percentage																																		85.00%		85.00%
Conversion price applicable period																																		10 days		10 days
Acceleration payment of remaining face value, percentage			125.00%
Adjusted conversion price of quoted market prices, Percentage			75.00%
Common stock shares issued as payment in outstanding principal																																			3,282,934
Principal amount outstanding																																			8,608,694
Principal payment																																		1,391,306
Common stock initial exercise price			$ 4.32
Common stock issued under warrant terms			434,027																																	1,562,500
Period for anniversary, initial closing date			Five-year period beginning on the six-month
Warrant exercise price	$ 4.32		$ 4.32			$ 3.60
Registration statement filing period			6 months
Period for registration statement to be effective			90 days thereafter
Registration statement review period			120 days thereafter
Debt instrument amortization payment description																																				The conversion rate applicable to any amortization payment that was made in shares of our common stock was the lower of (a) the Conversion Price and (b) a price equal to 85.0% of the average for a ten-day period immediately prior to the applicable amortization date of the volume-weighted average price of our shares of common stock.
Maximum percentage of cash flow effect on present value basis																																					10.00%
Percentage of carrying value of additional note to determine change in fair value of embedded conversion option																																					10.00%
Principal amount of loan, paid in cash																																				1,739,130
Term of warrant			5 years 6 months
Adjusted warrants exercise price	3.60		3.60
Gross proceeds from derivative instrument			10,000,000																																	8,000,000
Cost of the investor paid			45,000																																	5,518
Direct financing cost			500,000																																	400,000
Deferred cost			246,653																																	317,201
Recorded expenses			253,347																																	82,799
Interest expenses	$ 279,070	$ 1,295,833