Commitments and Contingencies (Tables)

3 Months Ended

Nov. 30, 2019

Commitments And Contingencies Disclosure [Abstract]

Schedule of Changes to Environmental Liabilities

The changes to the Company’s environmental liabilities for the thirteen weeks ended November 30, 2019 were as follows (in thousands):

	November 30, 2019
Beginning balance as of August 31, 2019	$	27,718
Revisions in estimates		1,200
Costs incurred for which reserves have been provided		(229	)
Insurance proceeds		31
Interest accretion		134
Changes in discount rates		(602	)
Ending balance as of November 30, 2019	$	28,252

Schedule of Anticipated Payments and Insurance Proceeds of Currently Identified Environmental Remediation Liabilities

Anticipated payments and insurance proceeds of currently identified environmental remediation liabilities as of November 30, 2019, for the next five fiscal years and thereafter, as measured in current dollars, are reflected below.

(In thousands)	2020			2021			2022			2023			2024			Thereafter			Total
Estimated costs – current dollars	$	10,915		$	2,186		$	1,353		$	1,091		$	1,058		$	12,032		$	28,635
Estimated insurance proceeds		(128	)		(173	)		(159	)		(173	)		(159	)		(693	)		(1,485	)
Net anticipated costs	$	10,787		$	2,013		$	1,194		$	918		$	899		$	11,339		$	27,150
Effect of inflation																				7,388
Effect of discounting																				(6,286	)
Ending balance as of November 30, 2019																			$	28,252