XML 42 R35.htm IDEA: XBRL DOCUMENT v2.4.0.6

Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012 LegalMatter	Sep. 30, 2011 LegalMatter	Jun. 30, 2012 Current Employees LegalMatter	Jun. 30, 2012 Former Employees LegalMatter	Jul. 20, 2012 Subsequent Event
Loss Contingencies [Line Items]
Accrued estimated civil penalty					$ 3.7
Notices of Charge of discrimination received	7		2	3
Number of plaintiffs dismissed		2

X

- Definition

Contingent Civil Penalty

+ References

No definition available.

+ Details

Name:	med_ContingentCivilPenalty
Namespace Prefix:	med_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Number Of Plaintiffs Dismissed By Court

+ References

No definition available.

+ Details

Name:	med_NumberOfPlaintiffsDismissedByCourt
Namespace Prefix:	med_
Data Type:	xbrli:positiveIntegerItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9, 10, 11, 12

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_LossContingencyNewClaimsFiledNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration