Inventories (Details Textual) (USD $) In Millions, unless otherwise specified	6 Months Ended
Dec. 28, 2013	Jun. 29, 2013
Inventories (Textual)
Raw material inventory reserves, Description	The Company considers raw material inventory obsolete and reserves it if the raw material has not moved in 365 days.
Description of inventory assembled devices	The Company reviews its assembled devices for excess and records a reserve if the quantity of assembled devices in inventory is in excess of the greater of the quantity shipped in the previous twelve months, the quantity in backlog or the quantity forecasted to be shipped in the following twelve months. In certain circumstances, management will determine, based on expected usage or other factors, that inventory considered excess by these guidelines should not be reserved. The Company does occasionally determine that the last twelve months' sales levels will not continue and reserves inventory in line with the quantity forecasted.
Inventory reserved	$ 2.8	$ 3.1

Amount of difference between inventory at lower of LIFO cost or market and inventory at lower of other inventory accounting method cost or market, for example, but not limited to, FIFO or average cost.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.6(c))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

-Subparagraph c

-Article 5

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