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Revenue Participation Rights - Additional Information (Detail)	1 Months Ended	3 Months Ended
	Feb. 28, 2011 USD ($)	Mar. 31, 2021 USD ($) Investment Project $ / Security shares
Deferred Revenue Arrangement [Line Items]
Revenue participation agreement		$ 15,000,000
"Seattle" Project [Member]
Deferred Revenue Arrangement [Line Items]
Percentage of revenue owed to certificate holder per each million invested		1.00%
Common shares issued per unit | shares		100,000
Galt Resources, LLC [Member]
Deferred Revenue Arrangement [Line Items]
Percentage of revenue owed to certificate holders		50.00%
Percentage of revenue owed to certificate holder per each million invested		1.00%
Investment multiplier in case of project success | Investment		3
Projects after bifurcation | Project		2
Galt Resources, LLC [Member] | SS Gairsoppa [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenue		$ 3,756,250
Galt Resources, LLC [Member] | Maximum [Member]
Deferred Revenue Arrangement [Line Items]
Investment for future revenue rights	$ 7,512,500
HMS Victory Project [Member]
Deferred Revenue Arrangement [Line Items]
Percentage of revenue owed to certificate holders		7.5125%
Revenue Participation Certificates [Member] | "Seattle" Project [Member]
Deferred Revenue Arrangement [Line Items]
Revenue participation certificates per unit value | $ / Security		50,000

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- Definition

Common shares issued per unit.

+ References

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- Definition

Investment for future revenue rights.

+ References

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- Definition

Investment multiplier in case of project success.

+ References

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- Definition

Number of projects after bifurcation.

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- Definition

Percentage of revenue owed to certificate holders.

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- Definition

Percentage of revenue owed to certificate holders per unit.

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- Definition

Revenue participation agreement value.

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- Definition

Revenue Participation Certificates Per Unit Value.

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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