Accumulated Other Comprehensive Income (Loss) (Schedule of Balances of Accumulated Other Comprehensive Income (Loss)) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Abstract]
Unrealized gains (losses) on available-for-sale securities, beginning balance					$ 1,129
Unrealized losses on cash flow hedges, beginning balance					(6,017)
Total Accumulated Other Comprehensive Loss, beginning balance					(4,888)	[1]
Unrealized gains (losses) on available-for-sale securities	(258)		1,091		(1,554)		1,085
Unrealized gains (losses) on cash flow hedges	2,963	[2]	(3,327)	[2]	6,049		(45)
Total Accumulated Other Comprehensive Loss	2,705		(2,236)		4,495		1,040
Unrealized gains (losses) on available-for-sale securities, ending balance	(425)				(425)
Unrealized losses on cash flow hedges, ending balance	32				32
Total Accumulated Other Comprehensive Loss, ending balance	$ (393)	[3]			$ (393)	[3]

[1] Note 1

[2] Net of tax of $1,595 and ($1,791) for the three months ended September 30, 2014 and 2013, respectively,

[3] unaudited