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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Detail) - Allowance for doubtful accounts receivable - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period $ 5,485 $ 5,095 $ 5,339
Charged to costs and expenses 1,043 1,609 1,103
Charged to other accounts 906 0 0
Other (1,088) (1,163) (1,139)
Balance at end of period 6,803 5,485 5,095
Foreign Currency Translation      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Cumulative translation adjustment $ 457 $ (56) $ (208)