v3.4.0.3
Property and equipment (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Property and equipment    
Total property and equipment $ 358,686 $ 337,888
Less: accumulated depreciation and amortization (133,724) (123,388)
Total property and equipment, net 224,962 214,500
Leasehold improvements    
Property and equipment    
Total property and equipment 272,139 243,743
Construction in progress    
Property and equipment    
Total property and equipment 48,383 57,692
Software    
Property and equipment    
Total property and equipment 25,887 24,349
Computer equipment    
Property and equipment    
Total property and equipment 10,526 10,366
Furniture, fixtures and office equipment    
Property and equipment    
Total property and equipment $ 1,751 $ 1,738