Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.19.1
Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
$ in Thousands
Mar. 31, 2019
Jan. 01, 2019
Accounting Policies [Line Items]    
Operating Lease, Liability $ 26,470  
Operating Lease, Right-of-Use Asset $ 22,618  
Accounting Standards Update 2016-02 [Member]    
Accounting Policies [Line Items]    
Operating Lease, Liability   $ 26,800
Operating Lease, Right-of-Use Asset   23,000
Deferred Rent Credit   $ 3,800