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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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Customer Concentration Risk (Details) - Customer Concentration Risk - Canon Medical Systems Corporation	3 Months Ended			6 Months Ended
	Apr. 03, 2020	Sep. 27, 2019	Mar. 29, 2019	Apr. 03, 2020	Mar. 29, 2019
Revenue from Contract with Customer
Concentration Risk [Line Items]
Concentration risk, percentage	23.00%		17.10%	20.90%	17.70%
Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage	18.30%	10.10%