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Detail of Certain Balance Sheet Accounts (Tables)
12 Months Ended
Sep. 30, 2022
Detail of Certain Balance Sheet Accounts [Abstract]  
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
Year Ended September 30,
20222021
Accounts payable, trade$184,963 $136,967 
Accrued compensation and benefits75,190 61,109
Accrued insurance liabilities7,693 5,787
Current operating lease liabilities17,319 13,973
Other accrued expenses31,785 31,278
$316,950 $249,114 
Schedule of Other Assets [Table Text Block]
Year Ended September 30,
20222021
Executive Savings Plan assets$706 $937 
Securities and equity investments2,447 10 
Right of use asset - finance leases10,246 3,927 
Other1,746 2,175 
Total$15,145 $7,049