Property and Equipment, Net (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Leasehold improvements	$ 25,714	$ 24,020
Construction in progress	99,908
Equipment and furniture	23,466	19,876
Property, Plant and Equipment, Gross, Total	149,088	43,896
Less accumulated depreciation and amortization	(40,311)	(36,215)
Property plant and equipment, net	$ 108,777	$ 7,681