Stockholders' Equity (Narrative) (Details) $ in Millions	3 Months Ended
Sep. 29, 2017 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued under ESPP \| shares	261
2007 Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued for option exercised \| shares	(191)
2007 Stock Plan \| Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested awards, unrecognized compensation expense \| $	$ 0.1
Nonvested awards, expense expected to be recognized, weighted average period	10 months 2 days
2007 Stock Plan \| Restricted stocks units and performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested awards, unrecognized compensation expense \| $	$ 2.8
Nonvested awards, expense expected to be recognized, weighted average period	1 year 5 months 1 day

Unrecognized cost of unvested share-based compensation awards.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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