Basis of Presentation New Accounting Pronouncements Adopted (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Oct. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease, right-of-use asset	$ 79,563
Operating lease liability	$ 80,393
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease, right-of-use asset		$ 80,000