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Recent Accounting Pronouncements - Additional Information (Detail) - USD ($)
Sep. 30, 2019
Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Operating Lease, Liability $ 43,339,717  
Operating Lease, Right-of-Use Asset $ 38,184,158  
Accounting Standards Update 2016-02 [Member]    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Operating Lease, Liability   $ 43,100,000
Operating Lease, Right-of-Use Asset   38,800,000
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Retained Earnings   $ 900,000