Basis of Presentation and Summary of Significant Accounting Policies - Effects of Adoption of New Accounting Policies (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets	$ 115,810		$ 0
Operating lease liabilities	$ 128,043		$ 0
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets		$ 126,000
Operating lease liabilities		$ 135,900
Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impact of adoption of ASU 2014-09				$ 117,000
Accounting Standards Update 2014-09 | Shareholders’ Deficit Attributable to Class A Shareholders
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impact of adoption of ASU 2014-09				$ 41,900