Stockholder's Equity - Changes in Accumulated Other Comprehensive Loss (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2016 USD ($)
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at December 31, 2015	$ 176,500
Other comprehensive loss before reclassifications	(152)
Amounts reclassified from accumulated other comprehensive loss	(54)
Net current period other comprehensive loss	(206)
Balance at June 30, 2016	135,741
Foreign Currency Items [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive loss before reclassifications	(1)
Net current period other comprehensive loss	(1)
Balance at June 30, 2016	(1)
Unrealized Gains and Losses on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive loss before reclassifications	(151)
Amounts reclassified from accumulated other comprehensive loss	(54)
Net current period other comprehensive loss	(205)
Balance at June 30, 2016	(205)
Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at June 30, 2016	$ (206)