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Impairment Charges (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 26, 2024 | Dec. 28, 2023 | Dec. 29, 2022
Impairment Charge [Line Items] |  |  |
Impairment charges | $ 6,823 | $ 1,061 | $ 1,525
Impaired assets, net | 16,137 | 6,429 | 5,229
Level 3 |  |  |
Impairment Charge [Line Items] |  |  |
Impairment charges | $ 6,823 | $ 1,061 | $ 1,525

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- Definition Net book value of assets impaired. + References No definition available. + Details
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Balance Type: | debit
Period Type: | instant

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- Definition Impairment Charge [Line Items] + References No definition available. + Details
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Namespace Prefix: | mcs_
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Balance Type: | na
Period Type: | duration

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482130/360-10-45-4 + Details
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- Details
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Balance Type: |
Period Type: |