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Financial Instruments - Additional Information (Detail) - USD ($)
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Maximum potential payout of contingent consideration $ 1,700,000  
Expense due to remeasurement of contingent liability 100,000  
Earn out liability payment 700,000  
Fair value, assets, level 1 to level 2 transfers, amount 0 $ 0
Fair value, assets, level 2 to level 1 transfers, amount 0 0
Fair value, liabilities, level 1 to level 2 transfers, amount 0 0
Fair value, liabilities, level 2 to level 1 transfers, amount 0 0
Fair value, asset transfers into level 3 0 0
Fair value, asset, transfers out of level 3 0 0
Fair value, liability, transfers into level 3 0 0
Fair value, liability, transfers out of level 3 0 $ 0
Level 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Contingent liability transferred amount $ 200,000