Accumulated Other Comprehensive Income - Summary of Accumulated Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 6,607	$ 7,296
Reclassification for gains included in net income	(111)	(209)	(154)
Current year changes	(6,790)	(480)
Ending balance	(294)	6,607	7,296
Unrealized Gain (Loss) on Derivatives [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(23)	856
Current year changes	1,420	(879)
Ending balance	1,397	(23)
Unrealized Gain (Loss) on Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	6,630	6,440
Reclassification for gains included in net income	(111)	(209)
Current year changes	(8,210)	399
Ending balance	$ (1,691)	$ 6,630