Other Comprehensive Income (loss) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (2,645)
Unrealized (losses) gains	425	3,752
Unrealized (losses) gains net	238	2,300	1,541
Reclassification from accumulated other comprehensive losses (income) into net income	(340)	(802)
Reclassification from accumulated other	(207)	(490)	(75)
Ending balance	(25,017)	(2,645)
Interest Rate Swaps and Interest Rate Cap Agreements
Comprehensive Income (Loss) [Line Items]
Beginning balance	(2,344)	(15,402)	(19,328)
Unrealized (losses) gains	(16,509)	277	(10,154)
Related income tax	6,450	(108)	3,950
Unrealized (losses) gains net	(10,059)	169	(6,204)
Reclassification from accumulated other comprehensive losses (income) into net income	17,409	21,096	16,578
Related income tax	(6,801)	(8,207)	(6,448)
Reclassification from accumulated other	10,608	12,889	10,130
Ending balance	(1,795)	(2,344)	(15,402)
Investment securities
Comprehensive Income (Loss) [Line Items]
Beginning balance	3,120	1,310	(156)
Unrealized (losses) gains	425	3,752	2,524
Related income tax	(187)	(1,452)	(983)
Unrealized (losses) gains net	238	2,300	1,541
Reclassification from accumulated other comprehensive losses (income) into net income	(340)	(802)	(123)
Related income tax	133	312	48
Reclassification from accumulated other	(207)	(490)	(75)
Ending balance	3,151	3,120	1,310
Foreign currency translation adjustments
Comprehensive Income (Loss) [Line Items]
Beginning balance	(3,421)	(1,205)
Unrealized (losses) gains	(22,952)	(2,216)	(1,205)
Unrealized (losses) gains net	(22,952)	(2,216)	(1,205)
Ending balance	(26,373)	(3,421)	(1,205)
Accumulated other comprehensive income (loss)
Comprehensive Income (Loss) [Line Items]
Beginning balance	(2,645)	(15,297)	(19,484)
Unrealized (losses) gains	(39,036)	1,813	(8,835)
Related income tax	6,263	(1,560)	2,967
Unrealized (losses) gains net	(32,773)	253	(5,868)
Reclassification from accumulated other comprehensive losses (income) into net income	17,069	20,294	16,455
Related income tax	(6,668)	(7,895)	(6,400)
Reclassification from accumulated other	10,401	12,399	10,055
Ending balance	$ (25,017)	$ (2,645)	$ (15,297)

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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