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Acquisition | 12 Months Ended
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Sep. 30, 2022
Business Combinations [Abstract] |
Acquisition | 2. Acquisition On March 3, 2021, we acquired 100% of the issued and outstanding capital stock of Intersurface Dynamics, a Connecticut-based manufacturer of substrate process chemicals used in various manufacturing processes, including semiconductors, silicon and compound semiconductor wafers, and optics, for a cash purchase price of $5.3 million. The total fair value of net assets acquired was approximately $0.7 million, including $0.4 million of identifiable intangible assets consisting of customer relationships and trade name, which are amortized using the straight-line method over their estimated useful lives of ten and three years, respectively. Goodwill acquired approximated $4.5 million, which was recorded in our Material and Substrate segment. Intersurface Dynamics's results of operations are included in our Material and Substrate segment from the date of acquisition. Our historical results would not have been materially affected by the acquisition of Intersurface Dynamics.

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