Business Combinations - Summary of Purchase Price (Detail) $ in Thousands, € in Millions				3 Months Ended	12 Months Ended
	Jan. 08, 2016 USD ($)	Nov. 20, 2015 USD ($)	Nov. 20, 2015 EUR (€)	Dec. 31, 2015 USD ($)	Sep. 30, 2016 USD ($)
Business Acquisition [Line Items]
Contingent consideration					$ 14,500
Creagh Medical Ltd [Member]
Business Acquisition [Line Items]
Cash Paid		$ 19,300	€ 18		18,449
Debt assumed					761
Contingent consideration					9,064
Payments to acquire business				$ 32,100	28,274
Less cash and cash equivalents acquired					(251)
Total purchase price, net of cash acquired					28,023
NorMedix, Inc. [Member]
Business Acquisition [Line Items]
Cash Paid	$ 7,000				6,905
Contingent consideration					3,520
Payments to acquire business					10,425
Less cash and cash equivalents acquired					(17)
Total purchase price, net of cash acquired					$ 10,408