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Self-Funded Health Insurance (Details) - USD ($)	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Self-Funded Health Insurance
Self-insure claims per employee	$ 30,000
Aggregate stop-loss	1,000,000
Health insurance expense	524,764	$ 512,595
Claims incurred but not yet paid	$ 17,722	$ 83,557

X

- Definition

Aggregate amount of stop-loss per plan year for participants under employee medical benefit plan.

+ References

No definition available.

+ Details

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Namespace Prefix:	mara_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of liability recognized for claims incurred but not yet paid under employee medical benefit plan.

+ References

No definition available.

+ Details

Name:	mara_EmployeeMedicalBenefitPlanLiability
Namespace Prefix:	mara_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of maximum self-insure claims under employee medical benefit plan per plan year for each individual.

+ References

No definition available.

+ Details

Name:	mara_EmployeeMedicalBenefitPlanMaximumClaimsPerEmployee
Namespace Prefix:	mara_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Total expenses of a HCO before stop-loss insurance recoveries. Costs of services rendered (including costs of services rendered but not yet reported).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 954
-SubTopic 450
-Section 30
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478201/954-450-30-4

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 954
-SubTopic 450
-Section 30
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478201/954-450-30-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

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Period Type:	duration