Fair Value Measurements - Additional Information (Detail) € in Millions	3 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2015 EUR (€)	Sep. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration liability	$ 9,308,000
Level 3 instruments			$ 0	$ 0
Interest accretion	109,000
Creagh Medical Ltd [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration liability	$ 9,064,000	€ 12
Minimum [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Percentage of Probability Achievement of Contingent Consideration payment.	80.00%
Maximum [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Percentage of Probability Achievement of Contingent Consideration payment.	95.00%
Contingent Consideration [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Foreign currency exchange loss	$ 100,000
Interest accretion	$ 100,000
Contingent Consideration [Member] | Non Revenue Based Milestones [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	5.90%
Contingent Consideration [Member] | Revenue Based Milestones [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate	13.90%