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INVESTMENTS (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013
Short-term investments [Abstract] |  |
Corporate obligations, minimum purchased maturities threshold | 3 months |
Corporate obligations, maximum purchased maturities threshold | 1 year |
Trading securities [Abstract] |  |
Mutual funds | $ 19,038 | $ 17,929
Equity investments | 4,092 | 4,359
Total non-current investments | 23,130 | 22,288
Trading securities cost (in excess of) or below market value | $ 343 | $ 157
Maximum ownership interests in various entities recorded under the cost method (in hundredths) | 20.00% |

X
- Definition The maximum purchased maturities threshold (in years), of corporate obligations classified as short-term investments. + References No definition available. + Details
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X
- Definition The minimum purchased maturities threshold (in months), of corporate obligations classified as short-term investments. + References No definition available. + Details
Name: | matw_CorporateObligationsMinimumPurchasedMaturitiesThreshold
Namespace Prefix: | matw_
Data Type: | us-types:durationStringItemType
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X
- Definition Equity and other investments, at cost. Equity investments primarily include ownership interests in various entities of less than 20%, which are recorded under the cost method of accounting. + References No definition available. + Details
Name: | matw_EquityAndOtherInvestments
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The maximum ownership interests in various entities, which are recorded under the cost method of accounting and are included in equity investments. + References No definition available. + Details
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X
- Definition Equity and fixed income mutual funds that are bought and held principally for the purpose of selling them after an extended period of time (i.e. longer than one operating cycle). + References No definition available. + Details
Name: | matw_TradingSecuritiesMutualFunds
Namespace Prefix: | matw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the net excess or deficiency of the fair value of an investment (security, contract) over or under its cost (face amount, notional amount), respectively, which excess value or deficiency has not been recognized in earnings of the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=50485924&loc=SL6090603-123010 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle). + 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 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermInvestments
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Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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- References No definition available. + Details
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