Mortgage and Loans Payable - Schedule of Allocation of Cash Proceeds to Derivative Components at their Fair Values - Promissory Note (Detail) - USD ($)

Mortgage and Loans Payable - Schedule of Allocation of Cash Proceeds to Derivative Components at their Fair Values - Promissory Note (Detail) - USD ($)	Sep. 30, 2015	Mar. 11, 2015
Debt Instrument [Line Items]
Cash proceeds	$ 9,955,000
Promissory Note [Member]
Debt Instrument [Line Items]
Cash proceeds		$ 14,750,000
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member]
Debt Instrument [Line Items]
Cash proceeds	14,750,000
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| Deferred Revenue Call Option [Member]
Debt Instrument [Line Items]
Cash proceeds	383,148
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| First Tranche [Member]
Debt Instrument [Line Items]
Cash proceeds	2,000,000
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| First Tranche [Member] \| Deferred Revenue Call Option [Member]
Debt Instrument [Line Items]
Cash proceeds	67,241
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| Second Tranche [Member]
Debt Instrument [Line Items]
Cash proceeds	6,000,000
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| Second Tranche [Member] \| Deferred Revenue Call Option [Member]
Debt Instrument [Line Items]
Cash proceeds	173,659
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| Third Tranche [Member]
Debt Instrument [Line Items]
Cash proceeds	3,000,000
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| Third Tranche [Member] \| Deferred Revenue Call Option [Member]
Debt Instrument [Line Items]
Cash proceeds	75,828
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| Fourth Tranche [Member]
Debt Instrument [Line Items]
Cash proceeds	2,000,000
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| Fourth Tranche [Member] \| Deferred Revenue Call Option [Member]
Debt Instrument [Line Items]
Cash proceeds	39,911
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| Fifth Tranche [Member]
Debt Instrument [Line Items]
Cash proceeds	1,750,000
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| Fifth Tranche [Member] \| Deferred Revenue Call Option [Member]
Debt Instrument [Line Items]
Cash proceeds	26,509
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| 2014 Convertible Promissory Notes [Member]
Debt Instrument [Line Items]
Cash proceeds	14,366,852
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| 2014 Convertible Promissory Notes [Member] \| First Tranche [Member]
Debt Instrument [Line Items]
Cash proceeds	1,932,759
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| 2014 Convertible Promissory Notes [Member] \| Second Tranche [Member]
Debt Instrument [Line Items]
Cash proceeds	5,826,341
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| 2014 Convertible Promissory Notes [Member] \| Third Tranche [Member]
Debt Instrument [Line Items]
Cash proceeds	2,924,172
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| 2014 Convertible Promissory Notes [Member] \| Fourth Tranche [Member]
Debt Instrument [Line Items]
Cash proceeds	1,960,089
Promissory Note [Member] \| Oceanica Resources S. de. R.L [Member] \| 2014 Convertible Promissory Notes [Member] \| Fifth Tranche [Member]
Debt Instrument [Line Items]
Cash proceeds	$ 1,723,491