Summary of Significant Accounting Policies - New Accounting Pronouncements (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of use asset	$ 75,040
Lease liability	$ 75,040
Accounting Standards Update 2018-11
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of use asset		$ 77,010
Lease liability		$ 77,010