Basis of Presentation, Use of Estimates and Recent Accounting Pronouncements - Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
Summary Of Significant Accounting Policies [Line Items]
Right-of-use asset	$ 21,828
Lease liability	$ 34,569
ASC 842
Summary Of Significant Accounting Policies [Line Items]
Right-of-use asset		$ 22,100
Lease liability		33,800
Derecognition of deferred rent		$ 11,700