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Property and Equipment - Summary of Property and Equipment (Detail) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 7,902,756	$ 11,404,751
Less: Accumulated depreciation	(7,287,999)	(10,647,910)
Total property and equipment	614,757	756,841
Computers and Peripherals [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	612,286	706,274
Furniture and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,267,281	1,854,098
Marine Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	5,416,150	8,104,576
Right to use asset, net [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 607,039	$ 739,803

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