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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended
	May 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Short-term investment maturity period		3 months
Restricted cash		$ 10,010		$ 10,010
Capitalized cost of assets held for sale		$ 416,329
Decrease in indebtedness	$ 650,000
Weighted average number of common shares outstanding		8,466,909	7,718,366
Redeemable preferred stock outstanding		0
Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, estimated useful life		3 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, estimated useful life		30 years

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61901-109447

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-Section S99
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