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Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Schedule Of Capitalization Longterm Debt [Line Items]    
Total long-term debt (including current portion) $ 32,633 $ 34,389
Less: Current portion (1,775) (1,775)
Total long-term debt, net 30,858 32,614
2025 Consolidated Loan [Member]    
Schedule Of Capitalization Longterm Debt [Line Items]    
Term note to bank $ 32,633 $ 34,389