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Compensation Plans - Expense Recognition of Deferred Compensation (Detail) - Restricted stock	Sep. 30, 2020 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2019 (Remaining Period)	$ 1,464,321
2020	5,242,920
2021	4,282,359
2022	2,309,526
2023	1,211,071
Thereafter	1,225,389
Total	$ 15,735,586

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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