XML 58 R42.htm IDEA: XBRL DOCUMENT v3.8.0.1
Share-based payments - Share-based Compensation Expenses (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Share-based compensation expenses $ 11,071 $ 7,318 $ 27,702 $ 21,941
Capitalized in intangible assets 421 369 1,002 868
Share-based compensation expenses, Total 11,492 7,687 28,704 22,809
Selling and Marketing Expense [Member]        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Share-based compensation expenses 862 657 2,428 1,778
General and Administrative Expenses [Member]        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Share-based compensation expenses $ 10,209 $ 6,661 $ 25,274 $ 20,163