Stockholders' Equity - Summary of Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Accumulated Other Comprehensive Income Loss [Line Items]
Balance at December 31, 2015			$ 872,679
Net current period other comprehensive loss	$ (233)	$ (34)	(550)	$ (34)
Balance at June 30, 2016	533,674		533,674
Unrealized Gains and Losses on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive loss before reclassifications			(687)
Amounts reclassified from other comprehensive loss			143
Net current period other comprehensive loss			(544)
Balance at June 30, 2016	(544)		(544)
Accumulated Unrealized Gains (Losses) on Securities Available For Sale [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive loss before reclassifications			(6)
Net current period other comprehensive loss			(6)
Balance at June 30, 2016	(6)		(6)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Other comprehensive loss before reclassifications			(693)
Amounts reclassified from other comprehensive loss			143
Net current period other comprehensive loss			(550)
Balance at June 30, 2016	$ (550)		$ (550)