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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract] |  |
Net sales | $ 190,081 us-gaap_SalesRevenueGoodsNet | $ 177,423 us-gaap_SalesRevenueGoodsNet
Cost of sales | 38,350 us-gaap_CostOfRevenue | 36,097 us-gaap_CostOfRevenue
Gross profit | 151,731 us-gaap_GrossProfit | 141,326 us-gaap_GrossProfit
Operating expenses: |  |
Commissions and incentives | 75,240 mtex_CommissionsAndIncentivesExpense | 75,633 mtex_CommissionsAndIncentivesExpense
Selling and administrative expenses | 36,193 us-gaap_GeneralAndAdministrativeExpense | 33,758 us-gaap_GeneralAndAdministrativeExpense
Depreciation and amortization | 1,608 us-gaap_DepreciationDepletionAndAmortization | 2,120 us-gaap_DepreciationDepletionAndAmortization
Other operating costs | 25,948 us-gaap_OtherCostAndExpenseOperating | 25,059 us-gaap_OtherCostAndExpenseOperating
Total operating expenses | 138,989 us-gaap_OperatingExpenses | 136,570 us-gaap_OperatingExpenses
Income from operations | 12,742 us-gaap_OperatingIncomeLoss | 4,756 us-gaap_OperatingIncomeLoss
Interest income | 121 us-gaap_InterestIncomeExpenseNet | 22 us-gaap_InterestIncomeExpenseNet
Other expense, net | (3,042)us-gaap_OtherNonoperatingIncomeExpense | (1,969)us-gaap_OtherNonoperatingIncomeExpense
Income before income taxes | 9,821 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 2,809 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Income tax (provision) benefit | (3,325)us-gaap_IncomeTaxExpenseBenefit | 365 us-gaap_IncomeTaxExpenseBenefit
Net income | $ 6,496 us-gaap_NetIncomeLoss | $ 3,174 us-gaap_NetIncomeLoss
Earnings per common share: |  |
Basic (in dollars per share) | $ 2.44 us-gaap_EarningsPerShareBasic | $ 1.20 us-gaap_EarningsPerShareBasic
Diluted (in dollars per share) | $ 2.40 us-gaap_EarningsPerShareDiluted | $ 1.18 us-gaap_EarningsPerShareDiluted
Weighted-average common shares outstanding: |  |
Basic (in shares) | 2,663 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 2,650 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted (in shares) | 2,706 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 2,683 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding

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