Significant Accounting Policies Revenue Recognition (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014
Accounting Policies [Abstract]
Amount of one-time increase in revenue from conversion of distributors to sell-in revenue recognition method	$ 5.1mcrl_Onetimerevenueconversion
Amount of one-time increase in cost of goods sold from conversion of distributors to sell-in revenue recognition method	$ 1.6mcrl_OneTimeCogs

Amount of one-time increase in revenue from conversion of distributors to sell-in revenue recognition method.

No definition available.

Name:	mcrl_Onetimerevenueconversion
Namespace Prefix:	mcrl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration