Other assets and liabilities, current and non-current (Other Long-Term Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Other Assets And Liabilities [Abstract]
Long-term deferred warranty revenue	$ 4,031	$ 5,624
Long-term deferred compensation liability	24,572	24,224
Interest rate swap	9,433	3,504
Long-term income taxes payable	6,674	7,376
Long-term operating lease liability	20,760
Other long-term liabilities	14,598	16,425
Other liabilities, noncurrent	$ 80,068	$ 57,153