New Accounting Standards (Details Textual) - USD ($)	3 Months Ended
	Dec. 30, 2018		Sep. 30, 2018	Jul. 02, 2018	Jul. 01, 2018
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Receivables, net	$ 67,256,000	[1]			$ 73,832,000
Accrued liabilities: Other	8,582,000	[1]			$ 7,870,000
ASU 2014-09
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Cumulative effect adjustment to retained earnings			$ 0
ASU 2014-09 | Effect of Reclassification Changes
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Receivables, net				$ 1,200,000
Accrued liabilities: Other				$ 1,200,000
ASU 2018-02 | Reclassification from Accumulated Other Comprehensive Income to Retained Earnings
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Effect of adoption of new accounting guidance	$ 4,000,000

[1] Unaudited