Segment Information (Long-lived Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jun. 30, 2019
Segment Reporting Information [Line Items]
Long-lived assets	$ 344,956	$ 336,019
United States [Member]
Segment Reporting Information [Line Items]
Long-lived assets	114,592	115,866
United Kingdom [Member]
Segment Reporting Information [Line Items]
Long-lived assets	143,215	132,876
All Other [Member]
Segment Reporting Information [Line Items]
Long-lived assets	$ 87,149	$ 87,277