Valuation and Qualifying Accounts (Detail) - Allowance For Credit Losses - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Valuation And Qualifying Accounts Disclosure [Line Items]
Beginning Balance		$ 8,493	$ 10,842	$ 6,516
Charged to Costs and Expenses		0	(1,500)	5,606
Deductions	[1]	(5,618)	(849)	(1,280)
Ending Balance		$ 2,875	$ 8,493	$ 10,842

[1] Consists of uncollectible accounts written-off.