No definition available.

Name:	mtex_InventoryByCountryAbstract
Namespace Prefix:	mtex_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents minimum percentage of revenue considered for accounted of major customer.

+ References

No definition available.

+ Details

Name:	mtex_MinimumPercentageOfRevenueConsideredForAccountedOfMajorCustomer
Namespace Prefix:	mtex_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents number of countries in which entity network marketing and distribution channels operates.

+ References

No definition available.

+ Details

Name:	mtex_NumberOfCountriesInWhichEntityNetworkMarketingAndDistributionChannelsOperates
Namespace Prefix:	mtex_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of countries in which the company sells product.

+ References

No definition available.

+ Details

Name:	mtex_NumberOfCountriesInWhichEntitySellsProducts
Namespace Prefix:	mtex_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of regions in which the company sells product.

+ References

No definition available.

+ Details

Name:	mtex_NumberOfRegionsInWhichCompanySellsProducts
Namespace Prefix:	mtex_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of net sales shipped to customer by geographic region to consolidated net sales during the period.

+ References

No definition available.

+ Details

Name:	mtex_SalesRevenueGoodsPercentage
Namespace Prefix:	mtex_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 35
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=51655945&loc=d3e3927-108312

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765

+ Details

Name:	us-gaap_InventoryNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The number of countries in which the entity operates as of balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfCountriesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

No definition available.

+ Details

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

- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.13)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 13
-Subparagraph a
-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 8
-Article 7

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

Name:	us-gaap_SalesRevenueNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

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

- References

No definition available.

+ Details

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

- Details

Name:	us-gaap_ProductOrServiceAxis=mtex_ConsolidatedProductSalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ProductOrServiceAxis=mtex_ConsolidatedPackSalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ProductOrServiceAxis=mtex_ConsolidatedOtherIncludingFreightMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConsolidationItemsAxis=us-gaap_ReportableGeographicalComponentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementGeographicalAxis=us-gaap_AmericasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementGeographicalAxis=us-gaap_AsiaPacificMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementGeographicalAxis=us-gaap_EMEAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

SEGMENT INFORMATION (Details) $ in Thousands	3 Months Ended
SEGMENT INFORMATION (Details) $ in Thousands	Mar. 31, 2016 USD ($) Region Segment Country	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)
SEGMENT INFORMATION [Abstract]
Number of operating segments \| Segment	1
Number of countries in which entity network marketing and distribution channels operates \| Country	25
Minimum percentage of revenue considered for accounted of major customer	10.00%
Number of countries in which company operates facilities \| Country	13
Number of countries in which company sells products \| Country	25
Number of regions in which company sells products \| Region	3
Revenue from External Customer [Line Items]
Consolidated net sales shipped to customers	$ 40,700	$ 44,400
Percent of total revenue	100.00%	100.00%
Long-lived assets by regions [Abstract]
Long-lived assets	$ 5,000		$ 4,700
Inventory, by Country [Abstract]
Inventories, net	11,228		9,199
Consolidated Product Sales [Member]
Revenue from External Customer [Line Items]
Consolidated net sales shipped to customers	33,700	$ 34,200
Consolidated Pack Sales [Member]
Revenue from External Customer [Line Items]
Consolidated net sales shipped to customers	5,800	8,900
Consolidated Other, Including Freight [Member]
Revenue from External Customer [Line Items]
Consolidated net sales shipped to customers	1,200	1,300
Reportable Geographical Components [Member] \| Americas [Member]
Revenue from External Customer [Line Items]
Consolidated net sales shipped to customers	$ 16,000	$ 18,100
Percent of total revenue	39.30%	40.80%
Long-lived assets by regions [Abstract]
Long-lived assets	$ 3,900		3,500
Inventory, by Country [Abstract]
Inventories, net	4,500		3,400
Reportable Geographical Components [Member] \| Asia/Pacific [Member]
Revenue from External Customer [Line Items]
Consolidated net sales shipped to customers	$ 21,400	$ 22,700
Percent of total revenue	52.60%	51.10%
Long-lived assets by regions [Abstract]
Long-lived assets	$ 1,000		1,100
Inventory, by Country [Abstract]
Inventories, net	4,100		4,300
Reportable Geographical Components [Member] \| EMEA [Member]
Revenue from External Customer [Line Items]
Consolidated net sales shipped to customers	$ 3,300	$ 3,600
Percent of total revenue	8.10%	8.10%
Long-lived assets by regions [Abstract]
Long-lived assets	$ 100		100
Inventory, by Country [Abstract]
Inventories, net	$ 2,600		$ 1,500