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Valuation And Qualifying Accounts (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Allowance for Credit Losses      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at the beginning of the period $ 2,760 $ 1,637 $ 5,489
Additions [1] 669 1,550 124
Deduction (654) (427) (3,976)
Balance at the end of the period 2,775 2,760 1,637
Valuation Allowance of Deferred Tax Assets      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at the beginning of the period 1,259 2,130 1,507
Additions [1] 0 10 633
Deduction (260) (881) (10)
Balance at the end of the period $ 999 $ 1,259 $ 2,130
[1] Reductions in/charges to revenues and expenses.