Revenue Recognition - Summary of Changes in Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	9 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Revenue from Contract with Customer [Abstract]
Balance at September 30, 2025	$ 7,196
Current period provision	6,451	$ 6,593
Write-offs, net and other	(4,709)
Balance as of December 31, 2025	$ 8,938

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Name:	us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant