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Fair Value Measurements Of Assets And Liabilities (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 29, 2017	Jun. 30, 2017
Level 1 | Money market funds
Cash equivalents:
Money market, net asset value (usd per share)	$ 1.00	$ 1.00
Recurring | Level 1 | Cost | Money market funds
Cash equivalents:
Cash equivalents	$ 22,423	$ 22,059
Recurring | Level 1 | Fair Value | Money market funds
Cash equivalents:
Cash equivalents	22,423	22,059
Recurring | Level 2 | Cost
Cash equivalents:
Short term investments	276	264
Other current assets	124	0
Other accrued expenses	0	5
Recurring | Level 2 | Cost | Bank certificates of deposit
Cash equivalents:
Cash equivalents	0	66
Recurring | Level 2 | Fair Value
Cash equivalents:
Short term investments	276	264
Other current assets	124	0
Other accrued expenses	0	5
Recurring | Level 2 | Fair Value | Bank certificates of deposit
Cash equivalents:
Cash equivalents	$ 0	$ 66

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Money Market Net Asset Value Per Share Fair Value Disclosure

+ References

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26610-111562

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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