New Accounting Standards (Details Textual) - USD ($)	3 Months Ended	6 Months Ended
Jan. 01, 2017	Jan. 01, 2017
Cost of goods sold
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Reclassification of expense resulted from adoption of accounting guidance	$ 199,000	$ 397,000
Engineering, selling and administrative expenses
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Reclassification of expense resulted from adoption of accounting guidance	$ 86,000	$ 173,000

Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration