Intangible Assets (Schedule of Finite-Lived Intangible Assets) (Details) - USD ($)	3 Months Ended
Oct. 18, 2015	Apr. 24, 2015
Finite-Lived Intangible Assets [Line Items]
Finite-Lived intangible assets	$ 14,772,000	$ 14,227,000
Accumulated amortization	(4,370,077)	(4,058,761)
Net	10,401,923	10,168,239
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived intangible assets	13,904,000	13,204,000
MR Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Purchased intangible assets	1,000,000
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived intangible assets	$ 868,000	$ 1,023,000

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

+ References

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