XML 56 R45.htm IDEA: XBRL DOCUMENT v3.7.0.1
Share-based payments - Share-based Compensation Expenses (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Share-based compensation expenses $ 7,312 $ 7,378
Capitalized in intangible assets 246 278
Share-based compensation expenses, Total 7,558 7,656
Selling and Marketing Expense [Member]    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Share-based compensation expenses 698 546
General and Administrative Expenses [Member]    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Share-based compensation expenses $ 6,614 $ 6,832