Amortization period of cost capitalized in obtaining or fulfilling contract with customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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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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Amount of the cumulative effect on retained earnings net of related income tax effect.

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Description of payment terms in contract with customer. Includes, but is not limited to, timing of payment, existence of financing component, variability of consideration and constraint on variable consideration.

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Expected instrument utilization period.

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Schedule Of Accounting Policies [Line Items]

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Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
	Oct. 01, 2018	Dec. 31, 2018	Sep. 30, 2018
Schedule Of Accounting Policies [Line Items]
Expected instrument utilization period			3 years
Revenue, description of payment terms		30 to 90 days from the date of shipment or satisfaction of the performance obligation
Maximum [Member]
Schedule Of Accounting Policies [Line Items]
Contract cost, amortization period		1 year
Maximum [Member] \| Reagent Rental Arrangements [Member] \| Lease Elements [Member] \| Product Concentration Risk [Member] \| Revenues [Member]
Schedule Of Accounting Policies [Line Items]
Concentration risk percentage		1.00%
Accounting Standards Update 2014-09 [Member]
Schedule Of Accounting Policies [Line Items]
Reduction to opening balance of retained earnings	$ (116)