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Debt - Additional Information (Detail) (USD $) | 9 Months Ended |
--- | --- | ---
Mar. 31, 2014 | Jun. 30, 2013
Acquired Indefinite-lived Intangible Assets [Line Items] |  |
Credit Agreement Term | 5 years |
Senior secured revolving credit facility | $ 200,000,000 | $ 125,000,000
mtrx_LineOfCreditFacilityExpirationDate | Mar. 13, 2019 |
Senior Leverage Ratio, Maximum | 2.50 |
Senior Leverage Ratio, Minimum | 1.00 |
Fixed Charge Coverage Ratio, Maximum | 1.25 |
Fixed Charge Coverage Ratio, Minimum | 1.00 |
Limit on asset dispositions | 20,000,000 |
Additional Margin on alternate base rate loans, Minimum | 0.25% |
Additional Margin on alternate base rate loans, Maximum | 1.00% |
Additional Margin on LIBOR loans, Minimum | 1.25% |
Additional Margin on LIBOR loans, Maximum | 2.00% |
Sublimit on Canadian dollar borrowings | 40,000,000 |
Additional Margin on CDOR loans, Minimum | 1.25% |
Additional Margin on CDOR loans, Maximum | 2.00% |
Additional Margin on Canadian prime rate loans, Minimum | 1.75% |
Additional Margin on Canadian prime rate loans, Maximum | 2.50% |
CDOR Rate description | sum of the annual rate of interest, which is the rate determined as being the arithmetic average of the quotations of all institutions listed in respect of the relevant CDOR interest period for Canadian Dollar denominated bankers’ acceptances, plus 0.1% |
Canadian prime rate description | greater of (i) the rate of interest per annum most recently announced or established by JPMorgan Chase Bank, N.A., Toronto Branch as its reference rate in effect on such day for determining interest rates for Canadian Dollar denominated commercial loans in Canada and (ii) the CDOR Rate plus 1.0%. |
Maximum limit of consolidated funded indebtedness | 2.5 |
Consolidated EBITDA as defined in the Credit Agreement | 87,400,000 |
Consolidated funded indebtedness | $ 55,300,000 |
Minimum [Member] |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |
Unused Credit Facility Fee | 0.20% |
Maximum [Member] |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |
Unused Credit Facility Fee | 0.35% |
CDOR Rate [Member] |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |
Basis spread on variable rate basis | 0.10% |
Canadian Prime Rate [Member] |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |
Variable rate basis | CDOR |
Basis spread on variable rate basis | 1.00% |

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- Definition Amount of limit on Canadian dollar borrowings. + References No definition available. + Details
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- Definition Consolidated earnings before interest taxes depreciation and amortization per credit. + References No definition available. + Details
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- Definition Consolidated Funded Indebtedness + References No definition available. + Details
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- Definition Credit Agreement Term + References No definition available. + Details
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- Definition Fixed charge coverage ratio maximum. + References No definition available. + Details
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- Definition Fixed charge coverage ratio minimum. + References No definition available. + Details
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- Definition Line of credit basis spread on alternate base rate maximum. + References No definition available. + Details
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- Definition Line of credit basis spread on alternate base rate minimum. + References No definition available. + Details
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- Definition Line of credit basis spread on Canadian deposit offered rate maximum. + References No definition available. + Details
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- Definition Line of credit basis spread on Canadian deposit offered rate minimum. + References No definition available. + Details
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- Definition Line of credit basis spread on Canadian prime rate maximum. + References No definition available. + Details
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- Definition Line of credit basis spread on Canadian prime rate minimum. + References No definition available. + Details
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- Definition Line of credit basis spread on London interbank offered rate maximum. + References No definition available. + Details
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- Definition Line of credit basis spread on London interbank offered rate minimum. + References No definition available. + Details
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- Definition Line of credit facility Canadian deposit offered rate description. + References No definition available. + Details
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- Definition Line of credit facility Canadian prime rate description. + References No definition available. + Details
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- Definition Maximum limit of consolidated funded indebtedness. + References No definition available. + Details
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- Definition Credit Facility Expiration Date + References No definition available. + Details
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- Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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