Income Taxes - Differences Between the Income Tax (Provision) Benefit Calculated at the Statutory U.S. Federal Income Tax Rate of 35% and the Actual Income tax (Provision) Benefit Recorded for Continuing Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Statutory federal income tax (expense) benefit									$ (9,035)	$ 10,034	$ (6,122)
Adjustment for nontaxable income (loss) of the REIT									32,642
State taxes (net of federal tax benefit and change in valuation allowance)									3,216	(523)	(3,206)
Permanent items									1,092	(384)	4
Nondeductible compensation										(2,319)	(25)
Nondeductible transaction costs										(6,632)
Federal tax credits										542	1,330
Federal valuation allowance									(3,509)	884	347
Unrecognized tax benefits									6,261	432	252
REIT conversion									62,063
Other									(68)
Total (provision) benefit for income taxes	$ 12,136	$ 12,450	$ 1,784	$ 66,292	$ 1,236	$ 16,581	$ (11,314)	$ (4,469)	$ 92,662	$ 2,034	$ (7,420)