Property - Property-Net (Detail) (USD $) In Thousands, unless otherwise specified											9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Buildings [Member]	Dec. 31, 2012 Buildings [Member]	Sep. 30, 2013 Leasehold Improvements [Member]	Dec. 31, 2012 Leasehold Improvements [Member]	Sep. 30, 2013 Furniture and Equipment [Member]	Dec. 31, 2012 Furniture and Equipment [Member]	Sep. 30, 2013 Construction in Progress [Member]	Dec. 31, 2012 Construction in Progress [Member]	Sep. 30, 2013 Minimum [Member] Leasehold Improvements [Member]	Sep. 30, 2013 Minimum [Member] Furniture and Equipment [Member]	Sep. 30, 2013 Maximum [Member] Buildings [Member]	Sep. 30, 2013 Maximum [Member] Leasehold Improvements [Member]	Sep. 30, 2013 Maximum [Member] Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 494,414	$ 450,894	$ 170,479	$ 166,560	$ 173,303	$ 143,408	$ 146,504	$ 122,125	$ 4,128	$ 18,801
Less - accumulated depreciation and amortization	244,634	225,861
Property	$ 249,780	$ 225,033
Property, Plant and Equipment, Useful Life											3 years	3 years	33 years	20 years	10 years