New Accounting Standards (Details Textual) - USD ($)	3 Months Ended	9 Months Ended
	Apr. 02, 2017	Apr. 02, 2017
Cost of goods sold
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Reclassification of expense resulted from adoption of accounting guidance	$ 198,000	$ 595,000
Engineering, selling and administrative expenses
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Reclassification of expense resulted from adoption of accounting guidance	$ 87,000	$ 260,000