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Fair Value Measurements - Summary of Company's Fair Value Hierarchy for its Financial Assets and Liabilities (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Assets:    
Fair value of investments $ 503 $ 503
Liabilities:    
Fair value of liabilities (880) (1,144)
Money Market Funds [Member]    
Assets:    
Fair value of cash equivalents 503 503
Interest Rate Swap [Member]    
Liabilities:    
Fair value of liabilities (880) (1,144)
Level 1 [Member]    
Assets:    
Fair value of investments 503 503
Level 1 [Member] | Money Market Funds [Member]    
Assets:    
Fair value of cash equivalents 503 503
Level 2 [Member]    
Liabilities:    
Fair value of liabilities (880) (1,144)
Level 2 [Member] | Interest Rate Swap [Member]    
Liabilities:    
Fair value of liabilities $ (880) $ (1,144)