New Accounting Pronouncements - Additional Information (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Company's ROU asset	$ 52,266
Total lease liability	61,397
Lease liability, current	11,531
Accounting Standards Update 2018-11
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Company's ROU asset	52,266	$ 56,591
Total lease liability	61,397	$ 64,877
Accounting Standards Update 2018-11 | Other Long Term Liabilities and Accrued Expenses
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Deferred rent	$ 8,300