Property and Equipment, Net (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 217,733	$ 149,088
Less accumulated depreciation and amortization	(39,131)	(40,311)
Property plant and equipment, net	178,602	108,777
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	21,942	25,714
Equipment and furniture
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	24,487	23,466
Construction in progress
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 171,304	$ 99,908