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Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Allowance for Credit Losses [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at beginning of period $ 38 $ 38
Charged to costs & expenses 49 (38)
Deductions
Balance at end of period 49 38
Deferred Tax Asset Valuation Allowance [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at beginning of period 50,564 45,818 48,616
Charged to costs & expenses 0 6,347 5,120
Deductions 45,363 1,601 7,918
Balance at end of period $ 5,201 $ 50,564 $ 45,818