XML 33 R21.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Revenue Revenue (Tables) | 6 Months Ended
--- | ---
Dec. 31, 2018
Contract with Customer, Asset and Liability [Abstract] |
Contract with Customer, Asset and Liability [Table Text Block] | The following table provides information about CIE and BIE:
| December 31, 2018 |  | June 30, 2018 |  | Change
| (in thousands)
Costs and estimated earnings in excess of billings on uncompleted contracts | $ | 72,694 |  |  | $ | 76,632 |  |  | $ | (3,938 | )
Billings on uncompleted contracts in excess of costs and estimated earnings | (115,366 | ) |  | (120,740 | ) |  | 5,374 |
Net contract liabilities | $ | (42,672 | ) |  | $ | (44,108 | ) |  | $ | 1,436 |
Disclosure Customer Contracts Additional Information [Abstract] |
Gross and Net Amount of Uncompleted Contracts | Gross amounts of contact assets and liabilities on uncompleted contracts are as follows:
| December 31, 2018 |  | June 30, 2018
| (in thousands)
Costs incurred and estimated earnings recognized on uncompleted contracts | $ | 2,089,319 |  |  | $ | 2,081,799 |
Billings on uncompleted contracts | 2,131,991 |  |  | 2,125,907 |
Net contract liabilities | $ | (42,672 | ) |  | $ | (44,108 | )
Disaggregation of Revenue [Abstract] |
Disaggregation of Revenue [Table Text Block] | The following table presents revenue disaggregated by the geographic area where the work was performed:
|  | Three Months Ended |  | Six Months Ended
|  | December 31, 2018 |  | December 31, 2017 |  | December 31, 2018 |  | December 31, 2017
|  | (In thousands)
United States |  | $ | 329,513 |  |  | $ | 259,072 |  |  | $ | 639,650 |  |  | $ | 480,845 |
Canada |  | 9,714 |  |  | 22,996 |  |  | 16,795 |  |  | 69,855 |
Other international |  | 1,341 |  |  | 843 |  |  | 2,634 |  |  | 2,121 |
Total Revenue |  | $ | 340,568 |  |  | $ | 282,911 |  |  | $ | 659,079 |  |  | $ | 552,821 |

X
- Definition Disclosure - Customer Contracts - Additional Information [Abstract] + References No definition available. + Details
Name: | mtrx_DisclosureCustomerContractsAdditionalInformationAbstract
Namespace Prefix: | mtrx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Gross and net amount of uncompleted contracts. + References No definition available. + Details
Name: | mtrx_GrossAndNetAmountOfUncompletedContractsTableTextBlock
Namespace Prefix: | mtrx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ContractWithCustomerAssetAndLiabilityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130551-203045 + Details
Name: | us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisaggregationOfRevenueAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
Name: | us-gaap_DisaggregationOfRevenueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration