v3.2.0.727
Summary Of Significant Accounting Policies (Narrative) (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 14, 2014
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Mar. 17, 2015
Jan. 05, 2015
Dec. 31, 2014
Summary Of Significant Accounting Policies [Line Items]                
Stock Issued During Period, Shares, Stock Splits 1.00              
Allowance for doubtful accounts receivable   $ 5.1 $ 3.3 $ 5.1 $ 3.3     $ 3.7
Shipping and handling costs   $ 12.8 $ 11.7 $ 25.8 $ 23.0      
Endomondo [Member]                
Summary Of Significant Accounting Policies [Line Items]                
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage             100.00%  
MyFitnessPal [Member]                
Summary Of Significant Accounting Policies [Line Items]                
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage           100.00%