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Employee Benefit Plans (Details Textual)	12 Months Ended
	Jun. 30, 2021 USD ($) shares	Jun. 30, 2020 USD ($) shares	Jun. 30, 2019 USD ($) shares
Employee Benefit Plans (Textual) [Abstract]
Percentage of limitation on pretax compensation	25.00%
Company match of first 3% of employee contributions	100.00%
Percentage of employee contribution for first half	3.00%
Employee contribution for next 2%	50.00%
Percentage of employee contribution for next half	2.00%
Contribution made by company | $	$ 5,400,000	$ 6,200,000	$ 6,200,000
Employee share purchase limit aggregate market value | $	$ 60,000
Shares available at ESPP | shares	1,000,000
Shares issued under ESPP | shares	29,171	20,733	15,812
Multiemployer Plans [Line Items]
Number of unions contributed to	90
Zone Red [Member]
Multiemployer Plans [Line Items]
Percentage of plan funded	65.00%
Description of plans funded	less than 65 percent
Zone Yellow [Member]
Multiemployer Plans [Line Items]
Percentage of plan funded	80.00%
Description of plans funded	less than 80 percent
Zone Green [Member]
Multiemployer Plans [Line Items]
Percentage of plan funded	80.00%
Description of plans funded	at least 80 percent

X

- Definition

Defined contribution plan employer matching contribution percent for next two percent of employee contribution.

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- Definition

Maximum percentage of employee gross pay, by the terms of the plan, that the employee may contribute to a defined contribution plan.

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Description of funded portion of plan.

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- Definition

Employee benefit plans.

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- Definition

Employee stock purchase plan per participant maximum annual share purchase limited to aggregate market value.

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- Definition

Employee stock purchase plan maximum number of shares available for issuance.

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Number of unions contributed to

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Percentage of employee contribution as base for employer contribution to match

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Percentage of employee contribution as base for employer contributions.

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Percentage of plan funded.

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- Definition

Amount of cost for defined contribution plan.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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