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Defined Contribution And Other Employee Plans (Tables)
 12 Months Ended
Jun. 30, 2021
Retirement Benefits [Abstract]  
Schedule Of Costs Related To Company-Sponsored Defined Contribution Plans
We sponsor three defined contribution plans established pursuant to Section 401(k) of the Internal Revenue Code. Contributions are determined under various formulas, and we contributed to each of these plans in 2021. The employer matching contribution percentage for one of these plans was increased effective January 1, 2019. Costs related to such plans for each of the years ended June 30 were as follows:
202120202019
Costs related to company-sponsored defined contribution plans$5,015 $4,170 $2,637 
Schedule Of Liability For Deferred Compensation And Accrued Interest
The following table summarizes our liability for total deferred compensation and accrued interest at June 30:
20212020
Liability for deferred compensation and accrued interest$4,606 $4,390 
Schedule Of Deferred Compensation Expense
Deferred compensation expense for each of the years ended June 30 was as follows:
202120202019
Deferred compensation expense$147 $239 $239 
Pension Benefits [Member]  
Multiemployer Plans [Line Items]  
Schedule Of Multiemployer Plans

 Pension Protection
Act Zone Status		 Fiscal Year
Contributions		  
Plan NameEIN/PN20202019FIP/RP Status
Pending /
Implemented		202120202019Surcharge
Imposed		Expiration
Date of
Collective
Bargaining
Agreement
Western Conference of Teamsters Pension Plan
916145047-
001
Green
12/31/19
Green
12/31/18
No
$327 $327 $388 
No
12/15/2021
Other Postretirement Benefits [Member]  
Multiemployer Plans [Line Items]  
Schedule Of Multiemployer Plans
Under this multiemployer plan and one additional multiemployer plan, we also contribute amounts for health and welfare benefits that are defined by each plan. These benefits are not vested. The contributions required by our participation in these plans for each of the years ended June 30 were as follows:
202120202019
Multiemployer health and welfare plan contributions$3,428 $3,242 $3,189