SEGMENT INFORMATION (Details) (USD $)	12 Months Ended
Dec. 31, 2014 Country Region	Dec. 31, 2013
SEGMENT INFORMATION [Abstract]
Minimum percentage of revenue considered for accounted of major customer (in hundredths)	10.00%
Number of countries in which company operates facilities	10
Number of countries in which company sells products	24
Number of regions in which company sells products	3
Revenue from External Customer [Line Items]
Consolidated net sales shipped to customers	$ 190,100,000us-gaap_SalesRevenueNet	$ 177,400,000us-gaap_SalesRevenueNet
Percent of total revenue (in hundredths)	100.00%mtex_SalesRevenueGoodsPercentage	100.00%mtex_SalesRevenueGoodsPercentage
Long-lived assets by country of domicile [Abstract]
Long-lived assets	4,103,000us-gaap_PropertyPlantAndEquipmentNet	3,239,000us-gaap_PropertyPlantAndEquipmentNet
Inventory, by Country [Abstract]
Inventories, net	10,591,000us-gaap_InventoryNet	13,988,000us-gaap_InventoryNet
North America [Member]
Revenue from External Customer [Line Items]
Consolidated net sales shipped to customers	80,800,000	82,200,000
Percent of total revenue (in hundredths)	42.50%	46.30%
Long-lived assets by country of domicile [Abstract]
Long-lived assets	3,100,000	2,400,000
Inventory, by Country [Abstract]
Inventories, net	4,000,000	6,400,000
Asia/Pacific [Member]
Revenue from External Customer [Line Items]
Consolidated net sales shipped to customers	92,400,000	80,300,000
Percent of total revenue (in hundredths)	48.60%	45.30%
Long-lived assets by country of domicile [Abstract]
Long-lived assets	800,000	400,000
Inventory, by Country [Abstract]
Inventories, net	4,300,000	5,300,000
EMEA [Member]
Revenue from External Customer [Line Items]
Consolidated net sales shipped to customers	16,900,000	14,900,000
Percent of total revenue (in hundredths)	8.90%	8.40%
Long-lived assets by country of domicile [Abstract]
Long-lived assets	200,000	400,000
Inventory, by Country [Abstract]
Inventories, net	2,300,000	2,300,000
Consolidated Product Sales [Member]
Revenue from External Customer [Line Items]
Consolidated net sales shipped to customers	155,300,000	143,500,000
Consolidated Pack Sales [Member]
Revenue from External Customer [Line Items]
Consolidated net sales shipped to customers	27,800,000	26,200,000
Consolidated Other, Including Freight [Member]
Revenue from External Customer [Line Items]
Consolidated net sales shipped to customers	$ 7,000,000	$ 7,700,000

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

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

+ References

No definition available.

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

+ References

No definition available.

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

+ References

No definition available.

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- 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

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-Subparagraph (SX 210.5-02.6(a))

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

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No definition available.

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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

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- 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

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