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Income Taxes (Income Tax Provisions Computed using Statutory U.S. Federal Rate) (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 01, 2018	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income tax at statutory rate		$ 26,639	$ 49,807	$ 29,347
Lower rates on foreign operations		(12,171)	(16,210)	(12,738)
State income taxes		4,390	3,072	5,825
Loss on investment in subsidiary		(374)	(25,688)	1,797
Gain on derivative		0	(23,252)	0
Permanent non-deductible items		1,086	(236)	469
Foreign tax provisions under GILTI		6,084	6,502	3,231
Other		(406)	(353)	4,947
Provision for (benefit from) income taxes		$ 25,248	$ (6,358)	$ 32,878
Income tax at statutory rate	21.00%	21.00%	21.00%	21.00%	35.00%
Lower rates on foreign operations		(9.60%)	(6.80%)	(9.10%)
State income taxes		3.50%	1.30%	4.20%
Loss on investment in subsidiary		(0.30%)	(10.80%)	1.30%
Gain on derivative		0.00%	(9.80%)	0.00%
Permanent non-deductible items		0.90%	(0.10%)	0.30%
Foreign tax provisions under GILTI		4.80%	2.70%	2.30%
Other		(0.30%)	(0.10%)	3.50%
(Benefit from) provision for income taxes		19.90%	(2.70%)	23.50%

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