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Related Party Transactions (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Related Party Transaction [Line Items]      
Related party expense $ 51us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty $ 81us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty $ 202us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Line of credit      
Related Party Transaction [Line Items]      
Interest expense 0us-gaap_InterestExpenseRelatedParty
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember		 [1] 0us-gaap_InterestExpenseRelatedParty
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember		 [1] 104us-gaap_InterestExpenseRelatedParty
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember		 [1]
Convertible senior secured promissory notes      
Related Party Transaction [Line Items]      
Interest expense 0us-gaap_InterestExpenseRelatedParty
/ us-gaap_LongtermDebtTypeAxis
= mdxg_ConvertibleSeniorSecuredPromissoryNotesMember		 [2] 0us-gaap_InterestExpenseRelatedParty
/ us-gaap_LongtermDebtTypeAxis
= mdxg_ConvertibleSeniorSecuredPromissoryNotesMember		 [2] 50us-gaap_InterestExpenseRelatedParty
/ us-gaap_LongtermDebtTypeAxis
= mdxg_ConvertibleSeniorSecuredPromissoryNotesMember		 [2]
Office space lease      
Related Party Transaction [Line Items]      
Related party expense 0us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= mdxg_OfficeSpaceLeaseMember		 [3] 70us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= mdxg_OfficeSpaceLeaseMember		 [3] 48us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= mdxg_OfficeSpaceLeaseMember		 [3]
Aircraft use      
Related Party Transaction [Line Items]      
Related party expense 10us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= sic_Z3721		 [4] 11us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= sic_Z3721		 [4] 0us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= sic_Z3721		 [4]
Furniture      
Related Party Transaction [Line Items]      
Related party expense $ 41us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember		 [5] $ 0us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember		 [5] $ 0us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember		 [5]
[1] interest related to a revolving secured line of credit extended by the Chairman of the Board and CEO dated March 31, 2011
[2] interest related to the convertible senior secured promissory notes issued to the Chairman of the Board and CEO during the fourth quarter of 2011
[3] payments related to the lease of office space from an entity owned by the Chairman of the Board and CEO
[4] payments related to aircraft use from an entity owned by the Chairman of the Board and CEO
[5] payment to Chairman of the Board and CEO for office furniture purchased for Company headquarters