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Revenue Participation Rights - Additional Information (Detail) (USD $) |  |  |  |  |  |  | 9 Months Ended | 1 Months Ended | 9 Months Ended |  |
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Sep. 30, 2013 | Dec. 31, 2012 | Sep. 30, 2013 "Cambridge" Project [Member] | Dec. 31, 2012 "Cambridge" Project [Member] | Sep. 30, 2013 "Republic" (now "Seattle") Project [Member] | Dec. 31, 2012 "Republic" (now "Seattle") Project [Member] | Sep. 30, 2013 Galt Resources, LLC [Member] Investment Project | Feb. 28, 2011 Galt Resources, LLC [Member] Maximum [Member] | Sep. 30, 2013 Galt Resources, LLC [Member] SS Gairsoppa [Member] | Mar. 31, 2013 Galt Resources, LLC [Member] SS Gairsoppa [Member] | Sep. 30, 2013 HMS Victory Project [Member] | Sep. 30, 2013 First Payment [Member] "Cambridge" Project [Member] | Sep. 30, 2013 Second Payment [Member] "Cambridge" Project [Member] | Sep. 30, 2013 Second Payment [Member] "Cambridge" Project [Member] Minimum [Member] | Sep. 30, 2013 Second Payment [Member] "Cambridge" Project [Member] Maximum [Member] | Sep. 30, 2013 Third Payment [Member] "Cambridge" Project [Member]
Deferred Revenue Arrangement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue participation certificates, per unit value |  |  | 50,000 |  | 50,000 |  |  |  |  |  |  |  |  |  |  |
Percentage of revenue owed to certificate holders |  |  |  |  |  |  | 50.00% |  |  |  | 7.5125% | 100.00% | 24.75% |  |  | 12.375%
Revenue owed to certificate holder |  |  |  |  |  |  |  |  |  |  |  | $ 825,000 |  | $ 4,000,000 | $ 35,000,000 | $ 35,000,000
Percentage of revenue owed to certificate holder, per each million invested |  |  |  |  | 1.00% |  | 1.00% |  |  |  |  |  |  |  |  |
Common shares, issued, per unit |  |  |  |  | 100,000 |  |  |  |  |  |  |  |  |  |  |
Investment for future revenue rights |  |  |  |  |  |  |  | 7,512,500 |  |  |  |  |  |  |  |
Investment multiplier in case of project success |  |  |  |  |  |  | 3 |  |  |  |  |  |  |  |  |
Percentage of additional net revenue owed to certificate holders |  |  |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |
Number of project bifurcate |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |
Participating revenue rights | 4,643,750 | 4,643,750 | 825,000 | 825,000 | 62,500 | 62,500 |  |  |  | 12,506,755 |  |  |  |  |  |
Deferred revenue, amortization |  |  |  |  |  |  |  |  | 3,756,250 |  |  |  |  |  |  |
Revenue participation agreement |  |  |  |  |  |  | 15,000,000 |  |  |  |  |  |  |  |  |
Future Payments |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |

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- Definition Percentage of revenue owed to certificate holders. + References No definition available. + Details
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- Details
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- Definition The noncurrent portion of deferred revenue amount as of balance sheet date. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized, and is not expected to be recognized in the next twelve months. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.A.4(a).Q1) -URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6935-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section A + Details
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