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Revenue Recognition (Tables) | 3 Months Ended
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Dec. 31, 2019
Revenue From Contract With Customer [Abstract] |
Summary of Percentage on Timing of Revenue Recognition | The following table sets forth percentages on the timing of revenue recognition for the three months ended December 31, 2018 and 2019.
| Three Months Ended |
| December 31, |
| 2018 |  |  | 2019 |
Goods and services transferred at a point in time |  | 88.3 | % |  |  | 90.8 | %
Goods and services transferred over time |  | 11.7 | % |  |  | 9.2 | %
Total Revenue |  | 100.0 | % |  |  | 100.0 | %

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