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Impact of Recently Issued Accounting Standards - Narrative (Details) - USD ($)
Mar. 31, 2019
Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Operating lease right-of-use assets $ 14,432,479 $ 14,634,769
Operating lease liability $ 23,880,000  
Accounting Standards Update 2016-02    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Operating lease right-of-use assets   14,600,000
Operating lease liability   24,200,000
Deferred rent credit   $ 9,600,000