Segment Information - (Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Foreign Currency Exchange Rate Translation Amount	$ 0.47	$ 0.47

Foreign exchange rate used to translate amounts difference between reported amount and reporting currency denominated amount.

No definition available.

Name:	mdit_ForeignCurrencyExchangeRateTranslationAmount
Namespace Prefix:	mdit_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration