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Separation Costs
12 Months Ended
Sep. 30, 2020
Restructuring and Related Activities [Abstract]  
Separation Costs Separation CostsIn response to the COVID-19 pandemic, reductions in oil and gas demand and volatility of commodity prices, we implemented workforce reductions at most of our locations. As a result, we recorded $1.4 million of separation costs in restructuring and other, net on the Consolidated Statement of Operations during the third quarter of Fiscal 2020.