Property and Equipment, Net, and Other Assets - Components of Property and Equipment, Net, and Other Assets (Detail) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Property Plant And Equipment [Abstract]
Property and equipment, net of accumulated depreciation of $2,446,746 and $2,193,231 as of September 30, 2018 and December 31, 2017, respectively	$ 698,587	$ 956,867
Security deposits and other assets	345,192	363,475
Property and Equipment net and other assets	$ 1,043,779	$ 1,320,342

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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