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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Customer Concentration Risk (Details) - Customer concentration risk - Canon Medical Systems Corporation	3 Months Ended		12 Months Ended
	Dec. 29, 2023	Dec. 30, 2022	Sep. 29, 2023
Revenue from contract with customer
Concentration Risk
Concentration risk (as a percent)	14.70%	20.10%
Accounts receivable
Concentration Risk
Concentration risk (as a percent)	8.20%		13.80%

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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