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Stockholders' Equity (Deficit) - Additional Information (Detail)		1 Months Ended	3 Months Ended			9 Months Ended
	Jun. 09, 2015 USD ($) shares	Mar. 31, 2015 USD ($) shares	Sep. 30, 2015 USD ($) $ / shares shares	Sep. 30, 2014 USD ($) $ / shares shares	Mar. 31, 2014 USD ($) shares	Sep. 30, 2015 USD ($) Incentive_Plan $ / shares shares	Sep. 30, 2014 USD ($) shares	Dec. 31, 2014 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares value representing payment for principal \| $			$ 8,980			$ 8,980		$ 8,558
Reverse stock split ratio						1-for-6
Preferred stock, par value \| $ / shares			$ 0.0001			$ 0.0001		$ 0.0001
Preferred stock, shares authorized			9,567,600			9,567,600		9,567,600
Warrants to purchase shares of common stock outstanding			0	0		0	0
Number of stock incentive plans \| Incentive_Plan						2
Stock incentive plan expiration date						Aug. 31, 2015
Share-based compensation \| $			$ 504,732	$ 1,898,111		$ 607,106	$ 1,827,767
Weighted average fair value of options granted \| $ / shares			$ 0	$ 0
2015 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for stock-based compensation	5,400,000
Series AA-2 Convertible Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, par value \| $ / shares			$ 0.0001			$ 0.0001
Preferred stock, shares authorized			86,677,740			86,677,740
Series AA-1 Convertible Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, par value \| $ / shares			$ 0.0001			$ 0.0001
Preferred stock, shares authorized			101,124,042			101,124,042
Preferred stock Liquidation preference accretion rate						8.00%
Mako Resources, LLC [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares issued		4,000,000
Common stock, shares value representing payment for principal \| $		$ 2,520,000
Oceanica Resources S. de. R.L [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares termination of option to acquire		6,000,000
Penelope Mining LLC [Member] \| Series AA-2 Convertible Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of trading days						20 days
Minimum [Member] \| Penelope Mining LLC [Member] \| Series AA-2 Convertible Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price of common stock \| $ / shares						$ 1.26
Warrants Attached to Senior Convertible Debt [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants to purchase shares of common stock outstanding			1,562,500			1,562,500
Warrants exercise price \| $ / shares						$ 3.60
Warrants expiration date						Nov. 09, 2016
Incentive Stock Options [Member] \| 2015 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for stock-based compensation	5,400,000
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares issued					1,290,155
Common stock, shares value representing payment for principal \| $					$ 2,420,863
Common Stock [Member] \| Incentive Stock Options [Member] \| 2015 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of incentive option granted						With respect to each grant of an ISO to a Participant who is not a Ten Percent Stockholder, the Exercise Price shall not be less than the Fair Market Value of a Share on the date the ISO is granted. With respect to each grant of an ISO to a Participant who is a Ten Percent Stockholder, the Exercise Price shall not be less than one hundred ten percent (110%) of the Fair Market Value of a Share on the date the ISO is granted.
Maximum aggregate number of Shares with respect to one or more Awards that may be granted to any one person during any calendar year	1,000,000
Maximum aggregate amount of cash that may be paid in cash to any person during any calendar year \| $	$ 2,000,000
Common Stock [Member] \| Incentive Stock Options [Member] \| Minimum [Member] \| 2015 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Eligible employee threshold percentage						10.00%
Purchase price of common stock percentage						110.00%