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Subsequent Events	12 Months Ended
Subsequent Events	Sep. 30, 2022
Subsequent Events [Abstract]
Subsequent Events	20. SUBSEQUENT EVENTS On October 10, 2022, we sold 100% of the membership interests of STR Mechanical, LLC and its subsidiary Technical Services II, LLC (collectively, "STR"). As a result, we expect to record a pre-tax gain of approximately $13,000 in the first fiscal quarter of 2023. The disposition of STR, which had operated as part of our Commercial & Industrial segment, will not have a material impact on our ongoing results of operations or financial position. In December 2022, our Board of Directors terminated our previous share repurchase program and authorized a new $40,000 share repurchase program.