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Deferred Income and Revenue Participation Rights - Additional Information (Detail)		1 Months Ended	3 Months Ended	6 Months Ended
	May 11, 2015 USD ($)	Feb. 28, 2011 USD ($)	Mar. 31, 2016 Investment	Jun. 30, 2016 USD ($) Project Investment $ / Security shares
Deferred Revenue Arrangement [Line Items]
Revenue participation agreement				$ 15,000,000
Call option expiration date			Mar. 11, 2016	Mar. 11, 2016
Oceanica Call Option (MINOSA) [Member]
Deferred Revenue Arrangement [Line Items]
Stock granted during period, value	$ 40,000,000			$ 40,000,000
Stock granted during period, percentage	54.00%			54.00%
Promissory Note [Member]
Deferred Revenue Arrangement [Line Items]
Promissory note face amount	$ 14,750,000
"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	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] \| "Cambridge" Project [Member]
Deferred Revenue Arrangement [Line Items]
Revenue participation certificates per unit value \| $ / Security				50,000
Revenue Participation Certificates [Member] \| "Seattle" Project [Member]
Deferred Revenue Arrangement [Line Items]
Revenue participation certificates per unit value \| $ / Security				50,000
First Payment [Member] \| "Cambridge" Project [Member]
Deferred Revenue Arrangement [Line Items]
Percentage of revenue owed to certificate holders				100.00%
Revenue owed to certificate holder				$ 825,000
Second Payment [Member] \| "Cambridge" Project [Member]
Deferred Revenue Arrangement [Line Items]
Percentage of revenue owed to certificate holders				24.75%
Second Payment [Member] \| "Cambridge" Project [Member] \| Minimum [Member]
Deferred Revenue Arrangement [Line Items]
Revenue owed to certificate holder				$ 4,000,000
Second Payment [Member] \| "Cambridge" Project [Member] \| Maximum [Member]
Deferred Revenue Arrangement [Line Items]
Revenue owed to certificate holder				$ 35,000,000
Third Payment [Member] \| "Cambridge" Project [Member]
Deferred Revenue Arrangement [Line Items]
Percentage of revenue owed to certificate holders				12.375%
Revenue owed to certificate holder				$ 35,000,000