Commitments and Contingencies - Additional Information (Detail)	Sep. 30, 2016 USD ($)
Loss Contingencies [Line Items]
Credit arrangements	$ 53,000,000
Contingent liability	11,000,000
Business Acquisition Acquiree One [Member]
Loss Contingencies [Line Items]
Business acquisition, maximum contingent consideration payments	6,000,000
Minimum [Member]
Loss Contingencies [Line Items]
Range of reasonably possible losses	0
Maximum [Member]
Loss Contingencies [Line Items]
Range of reasonably possible losses	18,000,000
Maximum [Member] | Business Acquisition Acquiree One [Member]
Loss Contingencies [Line Items]
Business acquisition, fair value of contingent consideration payments	$ 1,000,000