Summary of Significant Accounting Policies - Schedule of Components of Changes in Accumulated Other Comprehensive Income (Loss) (Parenthetical) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income Loss [Line Items]
Deferred taxes recognized on related currency translation adjustment	$ 1,542,000	$ (9,878,000)	$ (1,184,000)
Unrealized gain (loss) on derivative instrument, tax expense (benefit)	74,000	59,000	$ (164,000)
Unrealized gain (loss) on derivative instrument, tax expense (benefit)	(1,277,000)
Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Deferred taxes recognized on related currency translation adjustment	0	0
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Deferred taxes recognized on related currency translation adjustment	0	0
Unrealized gain (loss) on derivative instrument, tax expense (benefit)	74,000	59,000
Unrealized gain (loss) on derivative instrument, tax expense (benefit)	1,277,000
Change in Fair Value [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Unrealized gain (loss) on derivative instrument, tax expense (benefit)	74,000	$ 59,000
Unrealized gain (loss) on derivative instrument, tax expense (benefit)	$ 1,277,000