Summary of Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands	Jan. 01, 2019	Mar. 31, 2019
Significant Of Accounting Policies [Line Items]
Right-of-use asset		$ 67,600
Lease liability		$ 79,749
ASU 2016-02
Significant Of Accounting Policies [Line Items]
Right-of-use asset	$ 79,991
Lease liability	92,268
ASU 2018-02
Significant Of Accounting Policies [Line Items]
Reclassification from AOCI to retained earnings	$ 35,400