Reit Conversion - Additional Information (Detail) (USD $) Share data in Millions, unless otherwise specified	1 Months Ended	12 Months Ended		3 Months Ended				12 Months Ended		0 Months Ended
	Oct. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012 Potential Development Projects [Member]	Sep. 30, 2012 Potential Development Projects [Member]	Dec. 31, 2012 IT Projects [Member]	Sep. 30, 2012 IT Projects [Member]	Dec. 31, 2013 REIT Conversion [Member]	Dec. 31, 2012 REIT Conversion [Member]	Sep. 25, 2012 Maximum [Member]
Real Estate Properties [Line Items]
Number of shares approved for issuance										34
Sales price of management rights and intellectual property	$ 210,000,000
Purchase price to the Management Rights	190,000,000
Purchase price IP Rights	20,000,000
Term of management rights for income amortization		65 years
REIT conversion costs		22,190,000	101,964,000					22,190,000	101,964,000
Impairment charge		3,527,000	33,291,000	6,900,000	14,000,000	5,100,000	7,300,000		33,291,000
Professional fees								2,700,000	23,100,000
Employment severance and retention costs								14,400,000	24,400,000
Various other transition costs								$ 5,100,000	$ 21,200,000