Warrants (Summary of Fair Value) (Details) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Warrants Summary Of Fair Value Details
Exercise price greater than fair value	$ 0.97	$ 2.06

Exercise price of common stock warrant granted greater than fair value

No definition available.

Name:	mvis_ExercisePriceGreaterThanFairValue
Namespace Prefix:	mvis_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration