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Leases (Tables)
 6 Months Ended
Feb. 28, 2021
Leases [Abstract]  
Lease, Cost [Table Text Block] Lease expense is recognized on a straight-line basis over the lease term. The components of lease expense recognized in our Condensed Consolidated Statements of Operations are as follows:
Three Months EndedSix Months Ended
February 28, 2021February 29, 2020February 28, 2021February 29, 2020
(Dollars in thousands)
Operating lease expense$18,060 $20,538 $35,974 $36,098 
Finance lease expense:
Amortization of assets
1,890 1,073 3,945 3,262 
Interest on lease liabilities
230 261 476 485 
Short-term lease expense4,068 6,317 8,424 9,660 
Variable lease expense863 710 1,541 913 
Total net lease expense*
$25,111 $28,899 $50,360 $50,418 
*Income related to sub-lease activity is not material and has been excluded from the table above.
Lease Balance Sheet disclosure [Table Text Block] Supplemental balance sheet information related to operating and finance leases is as follows:
Balance Sheet LocationFebruary 28, 2021August 31, 2020
(Dollars in thousands)
Operating leases
Assets
Operating lease right of use assets
Other assets$265,684 $257,834 
Liabilities
Current operating lease liabilities
Accrued expenses58,766 57,200 
Long-term operating lease liabilities
Other liabilities210,440 203,691 
Total operating lease liabilities
$269,206 $260,891 
Finance leases
Assets
Finance lease assets
Property, plant and equipment$40,502 $44,860 
Liabilities
Current finance lease liabilities
Current portion of long-term debt6,827 7,993 
Long-term finance lease liabilities
Long-term debt20,379 23,467 
Total finance lease liabilities
$27,206 $31,460 
Weighted average remaining lease term (in years)
Operating leases
8.18.3
Finance leases
6.26.0
Weighted average discount rate
Operating leases
3.05 %3.11 %
Finance leases
3.37 %3.33 %
Lease Cash flow and other information disclosure [Table Text Block] Supplemental cash flow and other information related to operating and finance leases are as follows:
Six Months Ended
February 28, 2021February 29, 2020
(Dollars in thousands)
Cash paid for amounts included in measurement of lease liabilities:
Operating cash flows from operating leases
$37,460 $28,368 
Operating cash flows from finance leases
476 485 
Financing cash flows from finance leases
4,602 3,285 
Supplemental noncash information:
Right of use assets obtained in exchange for lease liabilities
27,919 18,162 
Right of use asset modifications
18,038 3,967 
Lease liability maturity [Table Text Block] Maturities of lease liabilities as of February 28, 2021, were as follows:
February 28, 2021
Finance LeasesOperating Leases
(Dollars in thousands)
Remainder of fiscal 2021$3,775 $35,958 
Fiscal 20227,051 62,491 
Fiscal 20236,121 48,834 
Fiscal 20243,494 38,956 
Fiscal 20252,086 28,928 
After fiscal 20258,113 105,485 
Total maturities of lease liabilities
30,640 320,652 
Less amounts representing interest3,434 51,446 
Present value of future minimum lease payments
27,206 269,206 
Less current lease liabilities6,827 58,766 
Long-term lease liabilities$20,379 $210,440