Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ 4,249	$ 4,233
Provision for credit losses	2,634	2,831
Write-offs, net of recoveries	(2,429)	(2,809)
Balance, end of period	$ 4,454	$ 4,255