v3.25.2

Asset Backed Debt Provisions (Details) $ in Millions	12 Months Ended
Asset Backed Debt Provisions (Details) $ in Millions	Jun. 30, 2025 USD ($) Rate
Debt Disclosure [Abstract]
Line of Credit Facility, Initiation Date	Sep. 09, 2021
ABL Facility Maximum Capacity \| $	$ 90.0
Compensating Balance, Amount \| $	$ 25.0
Line of credit facility, expiration date	Sep. 09, 2029
ABL Borrowing Base \| $	$ 64.6
Letters of Credit Outstanding, Amount \| $	4.8
Availability under the ABL Facility \| $	59.8
Borrowing Base Minimum During Year \| $	57.8
Borrowing Base Maximum During Year \| $	$ 73.8
Asset Backed Credit Facility Federal Funds Rate Addition	0.50%
Asset Backed Credit Facility Adjusted Term SOFR Rate Minimum	1.00%
Alternate Base Rate Margin	1.00%
Additional Margin on alternate base rate loans, Minimum	1.00%
Additional Margin on alternate base rate loans, Maximum	1.50%
Additional Margin on Adjusted Term SOFR, Minimum	2.00%
Additional Margin on Adjusted Term SOFR, Maximum	2.50%
Unused Credit Facility Fee	0.25%
Asset Backed Credit Facility Fixed Charge Coverage Ratio Requirement \| $	$ 13.5
Asset Backed Line of Credit Percentage Limit for Fixed Charge Coverage Ratio	15.00%
Asset Backed Credit Facility Fixed Charge Coverage Ratio Requirement, Maximum	1.00
Asset Backed Credit Facility Fixed Charge Coverage Ratio Requirement, Minimum	1.00

Additional Margin on Adjusted Term SOFR, Maximum

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Additional Margin on Adjusted Term SOFR, Minimum

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- Definition

Alternate Base Rate Margin

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- Definition

Asset Backed Credit Facility Adjusted Term SOFR Rate Minimum

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No definition available.

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- Definition

Asset Backed Credit Facility Fixed Charge Coverage Ratio Requirement

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- Definition

Asset Backed Credit Facility Fixed Charge Coverage Ratio Requirement, Maximum

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- Definition

Asset Backed Credit Facility Fixed Charge Coverage Ratio Requirement, Minimum

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- Definition

Borrowing Base Maximum During Year

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Balance Type:	credit
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- Definition

Borrowing Base Minimum During Year

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No definition available.

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Balance Type:	credit
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- Definition

Line of credit basis spread on alternate base rate maximum.

+ References

No definition available.

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- Definition

Line of credit basis spread on alternate base rate minimum.

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- Definition

mtrx:AssetBackedCreditFacilityFederalFundsRateAddition

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- Definition

mtrx:AssetBackedLineofCreditPercentageLimitforFixedChargeCoverageRatio

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- Definition

The amount of a specific compensating balance arrangement that is maintained under an agreement for a bank loan or future credit availability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 55
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477548/944-605-55-15

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-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 55
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477548/944-605-55-12

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Balance Type:	credit
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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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Balance Type:	credit
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- Definition

Date the credit facility terminates, in YYYY-MM-DD format.

+ References

+ Details

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Balance Type:	na
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- Definition

Date the credit facility first became available, in YYYY-MM-DD format.

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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

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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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.

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