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Financial Instruments - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Fair Value Of Financial Instruments [Line Items]    
Cash and cash equivalents $ 40,864 $ 35,992
Cash held outside United States, principally in Netherlands, United Kingdom, China, and Canada 26,400 28,000
Credit Facility [Member]    
Fair Value Of Financial Instruments [Line Items]    
Fair value of debt issued $ 70,600 $ 74,000