XML 88 R76.htm IDEA: XBRL DOCUMENT v3.3.1.900
Related Party Transactions (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Related Party Transaction      
Document Fiscal Year Focus 2015    
Groupon      
Related Party Transaction      
Commissions paid to related party $ 3.5 $ 3.3 $ 2.7
Receivable balance from related party 0.8 0.5  
Chegg      
Related Party Transaction      
Receivable balance from related party   0.5  
Revenue from Related Parties   0.5  
XO Group [Member]      
Related Party Transaction      
Related Party Transaction, Expenses from Transactions with Related Party 1.8 $ 1.4 $ 0.8
Accounts Payable, Related Parties $ 0.2