Basis of Presentation and Significant Accounting Policies New Accounting Pronouncements (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Operating lease right-of-use assets	$ 75,344	$ 68,131
Accrued liabilities and other	16,782	15,850
Operating lease liabilities	$ 59,845	$ 53,919