Note 6 (Details Textual) - USD ($)	Jun. 24, 2017	Sep. 24, 2016
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 369,000	$ 354,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 234,000	$ 219,000

Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319

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