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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
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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 |

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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 + Details
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