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Data Type:	num:perShareItemType
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Period Type:	instant

n/a

No definition available.

Name:	mram_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsOutstandingWeightedAverageExercisePriceAbstract
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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of other than options.

No definition available.

Name:	mram_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOtherThanOptionsGrantsInPeriodWeightedAverageExercisePrice
Namespace Prefix:	mram_
Data Type:	num:perShareItemType
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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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Data Type:	xbrli:monetaryItemType
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Net number of non-option equity instruments granted to participants.

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Data Type:	xbrli:sharesItemType
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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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Period Type:	instant

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.