Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Details)

v3.3.1.900
Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Accounting Policies [Abstract]      
Advertising expense $ 228,676 $ 222,962 $ 178,364
Research and development expense 54,933 54,109 $ 50,564
Debt issuance cost $ 7,155 $ 6,444