Deferred Income and Revenue Participation Rights - Participating Revenue Rights (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Deferred Revenue Arrangement [Line Items]
Deferred income and participating revenue rights	$ 6,484,154	$ 6,484,154
"Cambridge" Project [Member]
Deferred Revenue Arrangement [Line Items]
Deferred income and participating revenue rights	825,000	825,000
"Republic" (now "Seattle") Project [Member]
Deferred Revenue Arrangement [Line Items]
Deferred income and participating revenue rights	62,500	62,500
Galt Resources, LLC (HMS Victory) [Member]
Deferred Revenue Arrangement [Line Items]
Deferred income and participating revenue rights	3,756,250	3,756,250
Marine Services Projects [Member]
Deferred Revenue Arrangement [Line Items]
Deferred income and participating revenue rights	$ 1,840,404	$ 1,840,404