New Accounting Standards New Accounting Standards - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jul. 01, 2019	Jun. 30, 2019
New Accounting Standards [Abstract]
Operating Lease, Liability	$ 50,408	$ 49,000
Operating lease right-of-use assets (Note 11)	$ 50,153	$ 49,000	$ 0