Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
Sep. 27, 2019	Sep. 28, 2018
Benefit plan adjustments, income taxes	$ 169	$ 146
Unrealized loss on cash flow hedge, income taxes	$ 44	$ 0

Amount of tax (expense) benefit of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e640-108580

Name:	us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration