Business Combinations - Additional Information (Detail) $ / shares in Units, $ in Thousands, € in Millions				3 Months Ended
	Jan. 08, 2016 USD ($)	Nov. 20, 2015 USD ($)	Nov. 20, 2015 EUR (€)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) $ / shares	Nov. 20, 2015 EUR (€)
Business Acquisition [Line Items]
Acquisition transaction, integration and other costs					$ 2,491
Business acquisition, revenue recognized				$ 17,761	16,541
Business acquisition, loss recognized				2,300	2,653
Creagh Medical Ltd [Member]
Business Acquisition [Line Items]
Outstanding common shares and voting shares percentage		100.00%				100.00%
Payments to acquire business				28,274
Upfront payments		$ 19,300	€ 18	18,449
Contingent milestone payments		12,800				€ 12
Acquisition transaction, integration and other costs					2,400
Business acquisition, revenue recognized					500
Business acquisition, loss recognized					(300)
Creagh Medical Ltd [Member] | Maximum [Member]
Business Acquisition [Line Items]
Payments to acquire business		$ 32,000	€ 30
NorMedix, Inc. [Member]
Business Acquisition [Line Items]
Outstanding common shares and voting shares percentage	100.00%
Payments to acquire business				10,425
Upfront payments	$ 7,000			$ 6,905
Contingent milestone payments	7,000
Acquisition transaction, integration and other costs					100
NorMedix, Inc. [Member] | Maximum [Member]
Business Acquisition [Line Items]
Payments to acquire business	$ 14,000
Creagh Medical and NorMedix [Member]
Business Acquisition [Line Items]
Consolidated pro forma revenue					17,600
Consolidated pro forma net income					$ 4,200
Basic and diluted earnings per share | $ / shares					$ 0.32
Creagh Medical and NorMedix [Member] | Unaudited Pro Forma [Member]
Business Acquisition [Line Items]
Amortization expense on intangible assets					$ 400
Contingent consideration accretion expense					300
Non-recurring professional fees					2,500
Tax effect impact					$ 300