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Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Jan. 01, 2021	Oct. 01, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 159,620	$ 148,504
Contract liabilities	2,991		$ 2,793
Increase (decrease) in contract with customer liability	198
Amounts included in contract liabilities at the beginning of the period	$ 400
Net change in contract liabilities (percentage)	7.00%
Other Noncurrent Liabilities [Member]
Disaggregation of Revenue [Line Items]
Contract liabilities	$ 700		$ 900
Industrial & Defense
Disaggregation of Revenue [Line Items]
Revenue	73,146	61,618
Data Center
Disaggregation of Revenue [Line Items]
Revenue	30,652	35,354
Telecom
Disaggregation of Revenue [Line Items]
Revenue	55,822	51,532
United States
Disaggregation of Revenue [Line Items]
Revenue	74,426	63,982
China
Disaggregation of Revenue [Line Items]
Revenue	36,063	42,376
Asia Pacific, excluding China
Disaggregation of Revenue [Line Items]
Revenue	30,650	21,773
Other Countries
Disaggregation of Revenue [Line Items]
Revenue	$ 18,481	$ 20,373

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