Component of Property and Equipment (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 30, 2018
Property, Plant and Equipment [Line Items]
Property and equipment	$ 230,690	$ 210,581
Less accumulated depreciation and amortization	132,451	122,963
Property and equipment, net	98,239	87,618
Land and land improvements
Property, Plant and Equipment [Line Items]
Property and equipment	20,872	19,230
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment	37,443	34,557
Fleet and other equipment
Property, Plant and Equipment [Line Items]
Property and equipment	73,440	66,734
Tanks and equipment
Property, Plant and Equipment [Line Items]
Property and equipment	50,353	45,860
Furniture, fixtures and office equipment
Property, Plant and Equipment [Line Items]
Property and equipment	$ 48,582	$ 44,200

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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