Basis of Presentation - Recently Adopted Accounting Standards (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accounting Changes
Operating lease right-of-use assets	$ 12,981	$ 14,453
Operating lease liability	$ 13,108
ASU 2019-12 Income Taxes
Accounting Changes
Change in Accounting Principle, Accounting Standards Update, Adopted	true
Change in Accounting Principle, Accounting Standards Update, Early Adoption	true