Fair Value Measurements (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020
Fair Value of Assets (Liabilities)
Contingent consideration on acquisitions	$ 0	$ (4,840)
Level 1
Fair Value of Assets (Liabilities)
Short-term investments	61,000	55,000
Contingent consideration on acquisitions	0	0
Level 1 | Foreign Exchange Option
Fair Value of Assets (Liabilities)
Derivatives assets and liabilities	0	0
Level 1 | Interest Rate Swap
Fair Value of Assets (Liabilities)
Derivatives assets and liabilities	0	0
Level 2
Fair Value of Assets (Liabilities)
Short-term investments	0
Contingent consideration on acquisitions	0
Level 2 | Foreign Exchange Option
Fair Value of Assets (Liabilities)
Derivatives assets and liabilities	(3,398)	(3,774)
Level 2 | Interest Rate Swap
Fair Value of Assets (Liabilities)
Derivatives assets and liabilities	(8,961)	(9,674)
Level 3
Fair Value of Assets (Liabilities)
Short-term investments		0
Contingent consideration on acquisitions	$ (4,840)	(4,840)
Level 3 | Foreign Exchange Option
Fair Value of Assets (Liabilities)
Derivatives assets and liabilities		0
Level 3 | Interest Rate Swap
Fair Value of Assets (Liabilities)
Derivatives assets and liabilities		$ 0