Pension and Postretirement Benefits (Details Textual) - USD ($)	9 Months Ended
	Apr. 01, 2018	Apr. 02, 2017	Jul. 02, 2017
Defined Benefit Plan Disclosure [Line Items]
Proposed date the Board of Directors approved to terminate the qualified retirement plan	Dec. 31, 2017
Qualified Retirement Plan participants' vesting percentage as of the final termination date of the plan	100.00%
Termination Of Qualified Pension Plan Description	The Board of Directors has approved the termination of the Qualified Pension Plan with a proposed termination date of December 31, 2017. The termination of the Qualified Pension Plan is contingent upon (1) receipt of an IRS determination letter that the Qualified Pension Plan was qualified upon termination and (2) approval by the Pension Benefit Guaranty Corporation (“PBGC”). The date the termination will be approved and benefits can be distributed will not be known until we receive all required regulatory approvals. We submitted a request to the IRS for a determination letter that the Qualified Pension Plan is qualified upon termination prior to the end of the 2017 calendar year. We are still waiting for receipt of such notification from the IRS. Depending on the time of receipt of IRS and PBGC approval, we intend to distribute Qualified Pension Plan assets prior to the end of the 2018 calendar year. Additionally, in connection with preparing for the termination of the Qualified Pension Plan, we have amended the plan to provide that participants are 100 percent vested in their accrued benefits as of the effective date of the plan termination, to adopt a new standard for disability benefits that will apply when the plan’s assets are distributed due to the termination, to add a lump sum distribution for employees and terminated vested participants who are not in payment status when Qualified Pension Plan assets are distributed due to the termination and to make certain other conforming amendments to the Qualified Pension Plan to comply with applicable laws that may be required by the IRS or may be deemed necessary or advisable to improve the administration of the Qualified Pension Plan or facilitate its termination and liquidation.
Rabbi Trust Assets - SERP	$ 2,800,000		$ 2,600,000
Postretirement plan annual benefit limit for future eligible retirees	$ 4,000
Other postretirement benefits maximum benefit period	5 years
Contributions to the qualified pension plan	$ 0	$ 5,000,000
Expected additional employer contributions during remainder of fiscal 2017	$ 0
Supplemental Employee Retirement Plan, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Percentage of participant's base salary received as Supplemental Retirement Benefits	8.00%