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v2.4.1.9

Leases - Additional Information (Detail) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Operating and Capital Leases [Line Items] |  |  |
Operating Leases, Rent Expense, Sublease Rentals | $ 3,800,000 us-gaap_OperatingLeasesRentExpenseSubleaseRentals1 |  |
Equipment Expense | 1,200,000 us-gaap_EquipmentExpense | 1,400,000 us-gaap_EquipmentExpense | 1,800,000 us-gaap_EquipmentExpense
Lease Expiration Year | 2016 |  |
Discontinued Operations |  |  |
Operating and Capital Leases [Line Items] |  |  |
Accrued Rent, Current | 4,400,000 us-gaap_AccruedRentCurrent / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember | 1,100,000 us-gaap_AccruedRentCurrent / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember |
Minimum |  |  |
Operating and Capital Leases [Line Items] |  |  |
Control Centers Leases Range Price | 1,500 med_ControlCentersLeasesRangePrice / us-gaap_RangeAxis = us-gaap_MinimumMember |  |
Control Centers Leases Term | 5 years |  |
Maximum |  |  |
Operating and Capital Leases [Line Items] |  |  |
Control Centers Leases Range Price | $ 5,000 med_ControlCentersLeasesRangePrice / us-gaap_RangeAxis = us-gaap_MaximumMember |  |
Control Centers Leases Term | 10 years |  |

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- Definition Control Centers leases range price + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Control centers leases term. + References No definition available. + Details
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Namespace Prefix: | med_
Data Type: | xbrli:durationItemType
Balance Type: | na
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- Definition This item represents the expiration year of capital lease arrangement. + References No definition available. + Details
Name: | med_LeaseExpirationYear
Namespace Prefix: | med_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | med_OperatingAndCapitalLeasesLineItems
Namespace Prefix: | med_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for contractual rent under lease arrangements. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Current Liabilities -URI http://asc.fasb.org/extlink&oid=6509677 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6935-107765 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6911-107765 + Details
Name: | us-gaap_AccruedRentCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition This element represents equipment expense including depreciation, repairs, rentals, and service contract costs. This item also includes equipment purchases which do not qualify for capitalization in accordance with the entity's accounting policy. This item may also include furniture expenses. + References No definition available. + Details
Name: | us-gaap_EquipmentExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 + Details
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- Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |