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Long-Term Debt - Summary of Long-Term Debt (Detail) - USD ($)
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
Line of Credit Facility [Line Items]      
Total debt $ 263,500,000   $ 263,500,000
Less unamortized debt issuance costs (5,154,620)   (7,287,548)
Long-term debt 258,345,380   256,212,452
Less current installments     (7,500,000)
Long-term debt, net of current portion 258,345,380   248,712,452
Term Loan [Member]      
Line of Credit Facility [Line Items]      
Total debt 238,000,000   239,000,000
Revolving Credit Loan [Member]      
Line of Credit Facility [Line Items]      
Total debt 20,000,000   11,000,000
Promissory Note [Member]      
Line of Credit Facility [Line Items]      
Total debt $ 5,500,000 $ 10,000,000 $ 13,500,000