Total Provision For Income Taxes (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Federal, current	$ (2,000,000)	$ 9,800,000	$ 15,900,000
State and local, current	300,000	1,400,000	3,800,000
Current income tax (benefit)/expense	(1,700,000)	11,200,000	19,700,000
Federal, deferred	(43,200,000)	(25,700,000)	(103,100,000)
State and local, deferred	(13,900,000)	(5,500,000)	(19,300,000)
Deferred income taxes	(57,095,000)	(31,161,000)	(122,402,000)
Income tax benefit	$ (58,773,000)	$ (20,020,000)	$ (102,739,000)