Hedging Activities - Schedule of Derivative Financial Instruments in Condensed Consolidated Balance Sheet (Detail) - Designated as Hedging Instrument [Member] - Interest Rate Swaps [Member] $ in Thousands	Sep. 30, 2016 USD ($)
Derivatives Fair Value [Line Items]
Total derivatives designated as hedging instruments	$ (1,083)
Other Long-Term Assets [Member]
Derivatives Fair Value [Line Items]
Total derivatives designated as hedging instruments	683
Accrued Expenses [Member]
Derivatives Fair Value [Line Items]
Total derivatives designated as hedging instruments	(1,184)
Other Long-Term Liabilities [Member]
Derivatives Fair Value [Line Items]
Total derivatives designated as hedging instruments	$ (582)