Derivative Instruments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016	Sep. 30, 2010 USD ($)	Sep. 30, 2010 EUR (€)
Swap Agreement [Member]
Derivatives Fair Value [Line Items]
Swap agreement expiration date	Dec. 30, 2016
Designated as Hedging Instrument | Cross-Currency swap [Member] | Pay Euros [Member]
Derivatives Fair Value [Line Items]
Notional amount | €			€ 40,700,000
Fixed rate (as a percent)		5.00%	5.00%
Designated as Hedging Instrument | Cross-Currency swap [Member] | Receive U.S. dollars [Member]
Derivatives Fair Value [Line Items]
Notional amount | $		$ 55,200,000
Fixed rate (as a percent)		4.635%	4.635%