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Employee Benefit Plans (Detail Textuals 1) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
401(k) retirement savings plan
Defined Benefit Plan Disclosure [Line Items]
Description of the basis for determining contributions	a matching contribution equal to 100% of the first 6% of an employee's contribution; and, (ii) an additional discretionary contribution of up to 4.5% of compensation, depending on the employee's age and years of service, provided that such contributions comply with ERISA non-discrimination requirements. Employee and Company contributions are subject to certain ERISA limitations.
Defined contribution plan, employer contribution amount	$ 5,201	$ 4,937	$ 4,154
Employers matching contribution, annual vesting percentage	100.00%
Non-elective contribution	6.00%
Maximum additional discretionary contribution percentage	4.50%
Supplemental executive retirement benefits, international retirement plans and other employee benefit plans
Defined Benefit Plan Disclosure [Line Items]
Expenses under plan	$ 5,685	4,009	$ 4,304
Supplemental executive retirement benefits, international retirement plans and other employee benefit plans | Other liabilities
Defined Benefit Plan Disclosure [Line Items]
Pension and other postretirement benefit plans, liabilities	$ 17,391	$ 15,536

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Percentage of additional discretionary contribution.

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Amount of cost for defined contribution plan.

+ References

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-Publisher FASB
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-SubTopic 70
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Amount of discretionary contributions made by an employer to a defined contribution plan.

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Description of defined contribution pension and other postretirement plans. Includes, but is not limited to, plan utilized, employee group covered, and employer matching contributions.

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Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans.

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