v3.5.0.2
Property and equipment - Summary by type (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Property and equipment    
Total property and equipment $ 381,872 $ 337,888
Less: accumulated depreciation and amortization (145,192) (123,388)
Total property and equipment, net 236,680 214,500
Leasehold improvements    
Property and equipment    
Total property and equipment 287,766 243,743
Construction in progress    
Property and equipment    
Total property and equipment 53,765 57,692
Software    
Property and equipment    
Total property and equipment 27,907 24,349
Computer equipment    
Property and equipment    
Total property and equipment 10,678 10,366
Furniture, fixtures and office equipment    
Property and equipment    
Total property and equipment $ 1,756 $ 1,738