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Acquisition of BioSuite, LLC - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	May 31, 2018	Sep. 30, 2018	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill			$ 7.5
BioSuite LLC [Member]
Business Acquisition [Line Items]
Purchase price, net of cash acquired	$ 8.6
Business combination, initial payment at closing	5.8
Business Combination, Reduction for working capital adjustment		$ (0.4)
Business combination, consideration payable	$ 3.2
Business combination, consideration payable date	Nov. 30, 2019
Goodwill	$ 7.5
Goodwill, amortizable for income tax purpose	$ 4.3
Goodwill, amortization period for income tax purpose	15 years

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