New Accounting Standards (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets	$ 159,777
Operating lease liability	$ 212,105
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets		$ 148,500
Operating lease liability		$ 206,700
Deferred rent and cease-use liability			$ 62,300
Prepaid rent			$ 4,100