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TRANSACTIONS WITH RELATED PARTIES AND AFFILIATES (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Jan. 31, 2014
Landen Fredrick [Member]      
Related Party Transaction [Line Items]      
Officers' compensation $ 170,000us-gaap_OfficersCompensation
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_BoardOfDirectorsChairmanMember
   
Mr. Caster [Member]      
Related Party Transaction [Line Items]      
Beneficial ownership (in hundredths) 18.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_MajorityShareholderMember
  5.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_MajorityShareholderMember
Cash donations and sold products [Abstract]      
Consulting services charged 100,000mtex_ConsultingServicesCharged
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_MajorityShareholderMember
700,000mtex_ConsultingServicesCharged
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_MajorityShareholderMember
 
MannaRelief [Member]      
Cash donations and sold products [Abstract]      
Sold Products 300,000us-gaap_RevenueFromRelatedParties
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
200,000us-gaap_RevenueFromRelatedParties
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
 
Contributed Cash Donations 300,000mtex_ContributedCashDonations
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
900,000mtex_ContributedCashDonations
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
 
Mr. Ray Robbins [Member]      
Cash donations and sold products [Abstract]      
Payment of employment related compensation 2,600,000us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_DirectorMember
2,400,000us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_DirectorMember
 
Family Members [Member]      
Cash donations and sold products [Abstract]      
Payment of employment related compensation 300,000us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= mtex_FamilyMembersMember
300,000us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= mtex_FamilyMembersMember
 
Mr. Robbins' and Family Members [Member]      
Cash donations and sold products [Abstract]      
Payment of employment related compensation 2,900,000us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ImmediateFamilyMemberOfManagementOrPrincipalOwnerMember
2,600,000us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_ImmediateFamilyMemberOfManagementOrPrincipalOwnerMember
 
Kevin Robbins [Member]      
Cash donations and sold products [Abstract]      
Payment of employment related compensation 200,000us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= mtex_ImmediateFamilyMemberOfManagementOrPrincipalOwnerOneMember
200,000us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= mtex_ImmediateFamilyMemberOfManagementOrPrincipalOwnerOneMember
 
Ryan Robbins, the son of Mr. Ray Robbins [Member]      
Cash donations and sold products [Abstract]      
Payment of employment related compensation 100,000us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= mtex_MrRobbinsTheSonOfMrRayRobbinsMember
   
Marla Finley and Daughter-in-law Demra Robbins [Member]      
Cash donations and sold products [Abstract]      
Payment of employment related compensation 100,000us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= mtex_ImmediateFamilyMemberOfManagementOrPrincipalOwnerTwoMember
100,000us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= mtex_ImmediateFamilyMemberOfManagementOrPrincipalOwnerTwoMember
 
Mrs. Bala wife of Al Bala, the President [Member]      
Cash donations and sold products [Abstract]      
Payment of employment related compensation 200,000us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= mtex_ImmediateFamilyMemberOfManagementOrPrincipalOwnerThreeMember
100,000us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= mtex_ImmediateFamilyMemberOfManagementOrPrincipalOwnerThreeMember
 
M5M Foundation [Member]      
Cash donations and sold products [Abstract]      
Contributed Cash Donations $ 500,000mtex_ContributedCashDonations
/ mtex_NonProfitOrganizationAxis
= mtex_M5MFoundationMember