Component of Property and Equipment (Detail) - USD ($) $ in Thousands |
Sep. 30, 2018 |
Sep. 30, 2017 |
---|---|---|
Property, Plant and Equipment [Line Items] | ||
Property and equipment | $ 210,581 | $ 201,312 |
Less accumulated depreciation and amortization | 122,963 | 121,639 |
Property and equipment, net | 87,618 | 79,673 |
Land and land improvements | ||
Property, Plant and Equipment [Line Items] | ||
Property and equipment | 19,230 | 18,127 |
Buildings and leasehold improvements | ||
Property, Plant and Equipment [Line Items] | ||
Property and equipment | 34,557 | 34,175 |
Fleet and other equipment | ||
Property, Plant and Equipment [Line Items] | ||
Property and equipment | 66,734 | 62,500 |
Tanks and equipment | ||
Property, Plant and Equipment [Line Items] | ||
Property and equipment | 45,860 | 41,744 |
Furniture, fixtures and office equipment | ||
Property, Plant and Equipment [Line Items] | ||
Property and equipment | $ 44,200 | $ 44,766 |