Description of Business and Summary of Significant Accounting Policies - Recently Issued Accounting Pronouncements Not Yet Adopted (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jun. 30, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease right-of-use assets	$ 59,838
Total operating lease liabilities	$ 68,638
ASU 2018-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease right-of-use assets		$ 64,200
Total operating lease liabilities		$ 71,600