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Revenue (Tables) | 3 Months Ended
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Dec. 31, 2021
Revenue [Abstract] |
Disaggregation of Revenue | The following tables present our revenue disaggregated by markets and geography (in thousands):
| Three Months Ended |  |
| December 31, 2021 |  | January 1, 2021 |  |  |  |
Revenue by Market: |  |  |  |  |  |  |
Telecommunications | $ | 55,822 |  |  | $ | 51,532 |  |  |  |  |
Industrial & Defense | 73,146 |  |  | 61,618 |  |  |  |  |
Data Center | 30,652 |  |  | 35,354 |  |  |  |  |
Total | $ | 159,620 |  |  | $ | 148,504 |  |  |  |  |
| Three Months Ended |  |
| December 31, 2021 |  | January 1, 2021 |  |  |  |
Revenue by Geographic Region: |  |  |  |  |  |  |
United States | $ | 74,426 |  |  | $ | 63,982 |  |  |  |  |
China | 36,063 |  |  | 42,376 |  |  |  |  |
Asia Pacific, excluding China (1) | 30,650 |  |  | 21,773 |  |  |  |  |
Other Countries (2) | 18,481 |  |  | 20,373 |  |  |  |  |
Total | $ | 159,620 |  |  | $ | 148,504 |  |  |  |  |
(1)Asia Pacific primarily represents Taiwan, Japan, Singapore, Thailand, South Korea, Australia and Malaysia. (2)No country or region represented greater than 10% of our total revenue as of the dates presented, other than the United States, China and Asia Pacific region as presented above.
Contract with Customer, Asset and Liability | The following table presents the changes in contract liabilities during the three months ended December 31, 2021 (in thousands, except percentage):
| December 31, 2021 |  | October 1, 2021 |  | $ Change |  | % Change
Contract liabilities | $ | 2,991 |  |  | $ | 2,793 |  |  | $ | 198 |  |  | 7 | %

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 + Details
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