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Share-Based Compensation - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 26, 2024	Sep. 30, 2025	Sep. 26, 2024	May 07, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation	$ 1,230	$ 2,225	$ 6,216	$ 7,157
Marcus Corporation Omnibus Incentive Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares authorized for issuance (in shares)					2,000,000
Shares available for grants of additional stock options, non-vested stock (in shares)	1,983,302		1,983,302
Stock Options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation expense unrecognized	$ 833		$ 833
Share-based payment arrangement, weighted-average remaining life			1 year 3 months 18 days
Non-Vested Restricted Stock, RSUs and PSUs
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation expense unrecognized	$ 6,943		$ 6,943
Share-based payment arrangement, weighted-average remaining life			2 years 1 month 6 days

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