Components of Net Deferred Taxes (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022
Deferred tax assets:
Operating lease liabilities	$ 27,473	$ 28,591
Net operating loss carryforwards	5,178	5,432
Vacation accrual	2,775	3,050
Pension accrual	3,696	3,666
Allowance for bad debts	2,285	2,155
Insurance accrual	1,870	1,934
Inventory capitalization	955	(580)
Other, net	198	1,319
Total deferred tax assets	44,430	45,567
Valuation allowance	(4,437)	(4,184)
Net deferred tax assets	39,993	41,383
Deferred tax liabilities:
Operating lease right-of-use assets	26,025	27,097
Property and equipment	14,937	15,012
Intangibles	19,897	19,936
Fair value of derivative instruments	1,270	1,851
Other, net	3,635	3,107
Total deferred tax liabilities	65,764	67,003
Net deferred taxes	$ (25,771)	$ (25,620)

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Amount of deferred tax liability attributable to taxable temporary differences.

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