Mortgage and Loans Payable - Additional Information (Detail) (USD $)	6 Months Ended				0 Months Ended	6 Months Ended		1 Months Ended	6 Months Ended			1 Months Ended	6 Months Ended		6 Months Ended				1 Months Ended	6 Months Ended	1 Months Ended	6 Months Ended
	Jun. 30, 2014 Coins	Jun. 30, 2013	Jul. 31, 2013	May 10, 2012	May 07, 2014 Revolving Credit Facility [Member]	Jun. 30, 2014 Revolving Credit Facility [Member]	Jun. 30, 2014 First Mortgage [Member]	May 31, 2008 Mortgage Payable [Member]	Jun. 30, 2014 Mortgage Payable [Member]	Jul. 11, 2008 Mortgage Payable [Member]	May 31, 2008 Mortgage Payable [Member] First Mortgage [Member]	Nov. 30, 2011 Senior Convertible Note [Member] Investor	Jun. 30, 2014 Senior Convertible Note [Member]	May 10, 2012 Senior Convertible Note [Member]	Jun. 30, 2014 Senior Convertible Note [Member] Lender [Member]	Jun. 30, 2014 Additional Note [Member]	Jan. 02, 2013 Additional Note [Member]	May 10, 2012 Additional Note [Member]	Jul. 31, 2013 Term Loan [Member]	Jun. 30, 2014 Term Loan [Member]	Jul. 31, 2013 Project Term Loan [Member] oz	Jun. 30, 2014 Project Term Loan [Member]	May 31, 2014 Project Term Loan [Member]	Jul. 31, 2013 Project Term Loan [Member] Gairsoppa [Member]
Debt Instrument [Line Items]
Basis spread on variable rate, points			0.75%						0.01%	0.75%									5.00%			5.00%
Debt instrument description																				one month LIBOR rate plus 500 basis points		One-month LIBOR rate plus 500 basis points
Maturity date						May 31, 2015		May 14, 2015	Jul. 11, 2013											Jul. 31, 2016		Jul. 24, 2014
Periodic payment								$ 5,080											$ 500,000
Secured collateral	24,800
Value of secured collateral, percent	40.00%
Outstanding amount mortgage loan																				4,500,000
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						7,436,514
Company's consolidated debt							555,911		1,183,750	2,580,000											10,000,000
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
Principal amount of loan, outstanding											679,000					2,347,826
Interest rate, stated percentage								6.45%										9.00%
Original principal amount				8,000,000								10,000,000						8,000,000					10,000,000
Warrant issued to purchase common stock	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%
Initial conversion price													$ 3.74	$ 3.17			$ 3.17	$ 3.74
Debt instrument amortization payment description													The conversion rate applicable to any amortization payment that we make in shares of our common stock will be 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													3,282,960
Principal amount outstanding													8,608,694
Principal payment													1,391,306
Amount due on notes payable													0			0
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			$ 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 we make in shares of our common stock will be 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
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