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Revolving Credit Facility - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Aug. 11, 2020
Sep. 30, 2020
Mar. 31, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Line of Credit Facility [Line Items]              
Interest Expense   $ 2,856   $ 2,907 $ 8,846 $ 10,128  
Revolving credit facility   8,750     8,750   $ 9,750
Revolving Credit Facility [Member]              
Line of Credit Facility [Line Items]              
Additional borrowings from revolving credit facility     $ 14,000        
Repayment of revolving credit facility $ 15,000            
Interest Expense   108   132 423 328  
Amortization of Debt Issuance Costs   39   $ 39 118 $ 118  
Revolving credit facility   $ 8,750     $ 8,750