Acquisition and Divestitures - Tru-Incise Valvulotome - Additional Information (Detail) - Tru-Incise Valvulotome [Member] - USD ($) $ in Millions	1 Months Ended	6 Months Ended
	May 31, 2015	Jun. 30, 2017
Business Acquisition [Line Items]
Purchase price for acquisition of assets and rights	$ 1.4
Cash paid for assets purchased	1.1
Balance payable to Clinical Instruments	$ 0.3
Acquisition date of assets and rights		May 31, 2015
Maximum goodwill deductible for tax purposes	15 years