Investments - Additional Information (Detail) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Investments [Line Items]
Equity Method Investments Fair Value Disclosure	$ 6,320,213	$ 6,535,821
Convertible Debt Securities [member]
Investments [Line Items]
Investments, Simple Interest Rate	6.00%
Investments Fair Value	$ 7,533,000	$ 7,533,000

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

Name:	us-gaap_InvestmentsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant