Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)		9 Months Ended
	Sep. 30, 2025	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2023	Sep. 30, 2022
Schedule Of Significant Accounting Policies [Line Items]
Cash, cash equivalents, and restricted cash		$ 45,951,000	$ 57,396,000	$ 45,441,000	$ 14,870,000
Cash and cash equivalents		45,701,000		45,191,000
Restricted cash		250,000		250,000
Derivative maximum payout				5,000,000
Accrued expenses and other current liabilities		132,274,000		115,606,000
Other long-term liabilities		16,019,000		16,175,000
New England Teamsters & Trucking Industry Pension Fund
Schedule Of Significant Accounting Policies [Line Items]
Accrued expenses and other current liabilities		300,000		300,000
Other long-term liabilities		15,700,000		16,000,000.0
New England Teamsters & Trucking Industry Pension Fund | Significant Other Observable Inputs Level 2
Schedule Of Significant Accounting Policies [Line Items]
Multiemployer plan discounted withdrawal liability		18,600,000		$ 18,500,000
Financial Products Corporation
Schedule Of Significant Accounting Policies [Line Items]
Delivery and branch expense increased (reduced) under weather hedge contract		$ 7,500,000	$ 12,500,000
Scenario Forecast
Schedule Of Significant Accounting Policies [Line Items]
Derivative maximum receivable	$ 15,000,000
Derivative maximum payout	$ 5,000,000
Maximum
Schedule Of Significant Accounting Policies [Line Items]
Cash equivalents, highly liquid investments maturity		3 months
Derivative maximum receivable		$ 12,500,000