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Note 5 - Leases (Tables) | 3 Months Ended
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Mar. 31, 2025
Notes Tables |
Lease Assets and Liabilities [Table Text Block] |
|  |  | March 31, |  |  | December 31, |
| Balance Sheet Classification |  | 2025 |  |  | 2024 |
Assets |  |  |  |  |  |  |  |  |
Operating lease assets | Operating lease assets |  | $ | 171 |  |  | $ | 170 |
Finance lease assets (1) | Other assets |  |  | 9 |  |  |  | 8 |
Total lease assets |  | $ | 180 |  |  | $ | 178 |
Liabilities |  |  |  |  |  |  |  |  |
Current |  |  |  |  |  |  |  |  |
Operating lease liabilities | Operating lease liabilities |  | $ | 32 |  |  | $ | 31 |
Finance lease liabilities | Accrued expenses and other current liabilities |  |  | 2 |  |  |  | 1 |
Long-term |  |  |  |  |  |  |  |  |
Operating lease liabilities | Operating lease liabilities |  |  | 153 |  |  |  | 153 |
Finance lease liabilities | Other liabilities |  |  | 8 |  |  |  | 8 |
Total lease liabilities |  | $ | 195 |  |  | $ | 193 |
Lessee, Operating Lease and Finance Lease, Liability, to be Paid, Maturity [Table Text Block] |
Maturity of Lease Liabilities |  | Operating |  |  | Finance |
Remainder of 2025 |  | $ | 32 |  |  | $ | 2 |
2026 |  |  | 39 |  |  |  | 2 |
2027 |  |  | 32 |  |  |  | 2 |
2028 |  |  | 26 |  |  |  | 2 |
2029 |  |  | 21 |  |  |  | 2 |
After 2029 |  |  | 115 |  |  |  | 2 |
Total lease payments |  |  | 265 |  |  |  | 12 |
Less: Interest |  |  | (80 | ) |  |  | (2 | )
Present value of lease liabilities |  | $ | 185 |  |  | $ | 10 |
Lease, Cost [Table Text Block] |
|  | March 31, |  |  | March 31, |
Lease Term and Discount Rate |  | 2025 |  |  | 2024 |
Weighted-average remaining lease term (years) |  |  |  |  |  |  |  |
Operating leases |  |  | 10 |  |  |  | 11 |
Finance leases |  |  | 5 |  |  |  | — |
Weighted-average discount rate |  |  |  |  |  |  |  |
Operating leases |  |  | 6.8 | % |  |  | 6.7 | %
Finance leases |  |  | 6.8 | % |  |  | — |

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- Definition The entire tabular disclosure for leased assets and liabilities. + References No definition available. + Details
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Namespace Prefix: | mrc_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability and finance lease liability. + References No definition available. + Details
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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- References No definition available. + Details
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