Accumulated Other Comprehensive Income (Loss) (Schedule of Balances of Accumulated Other Comprehensive Income (Loss)) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Abstract]
Unrealized gains (losses) on available-for-sale securities, beginning balance					$ 7
Unrealized losses on cash flow hedges, beginning balance					(5,095)
Total Accumulated Other Comprehensive Loss, beginning balance					(5,088)	[1]
Unrealized gains (losses) on available-for-sale securities	(3)	[2]	(16)	[2]	(6)	[2]	13	[2]
Unrealized gains (losses) on cash flow hedges	(1,533)	[3]	8,950	[3]	3,281	[3]	2,273	[3]
Total Accumulated Other Comprehensive Loss	(1,536)		8,934		3,275		2,286
Unrealized gains (losses) on available-for-sale securities, ending balance	1				1
Unrealized losses on cash flow hedges, ending balance	(1,814)				(1,814)
Total Accumulated Other Comprehensive Loss, ending balance	$ (1,813)	[4]			$ (1,813)	[4]

[1] Note 1

[2] Net of tax of ($2) and ($9) for the three months ended June 30, 2013 and 2012, respectively, and $(3) and $7 for the six months ended June 30, 2013 and 2012, respectively.

[3] Net of tax of ($825) and $4,819 for the three months ended June 30, 2013 and 2012, respectively, and $1,767 and $1,224 for the six months ended June 30, 2013 and 2012, respectively.

[4] unaudited