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REGULATORY CAPITAL (Schedule of Bank’s actual and required capital levels ) (Details)		Sep. 30, 2022	Sep. 30, 2021
Magyar Bank [Member]
Tier 1 leverage ratio
Tier 1 leverage ratio (to average assets) ratio		11.13%	10.18%
Required amount of Tier 1 Capital for adequacy purposes effective, ratio		4.00%	4.00%
Minimum Tier 1 Capital required to be well-capitalized, ratio		5.00%	5.00%
Common Equity Tier 1 Capital (to risk-weighted assets) ratio		15.22%	15.74%
Required amount of common equity Tier 1 Capital for adequacy purposes effective, ratio	[1]	7.00%	7.00%
Minimum common equity Tier 1 Capital required to be well-capitalized, ratio		6.50%	6.50%
Tier 1 risk-based capital ratio
Tier 1 risk-based capital ratio (to risk-weighted assets) ratio		15.22%	15.74%
Required amount of Tier 1 Capital for adequacy purposes effective, ratio	[1]	8.50%	8.50%
Minimum Tier 1 Capital required to be well-capitalized, ratio		8.00%	8.00%
Total risk-based capital ratio
Total risk-based capital ratio (to risk-weighted assets) ratio		16.47%	16.99%
Required amount of capital for adequacy purposes effective, ratio	[1]	10.50%	10.50%
Minimum Capital required to be well-capitalized, ratio		10.00%	10.00%
Magyar Bancorp, Inc. [Member]
Tier 1 leverage ratio
Tier 1 leverage ratio (to average assets) ratio		12.57%	12.43%
Common Equity Tier 1 Capital (to risk-weighted assets) ratio		17.16%	19.19%
Tier 1 risk-based capital ratio
Tier 1 risk-based capital ratio (to risk-weighted assets) ratio		17.16%	19.19%
Total risk-based capital ratio
Total risk-based capital ratio (to risk-weighted assets) ratio		18.41%	20.44%
[1] Includes 2.50% capital conservation buffer

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Ratio of minimum total risk-based capital to risk-weighted assets required for capital adequacy as defined by regulatory framework.

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Ratio of minimum total risk-based capital to risk-weighted assets categorized as well capitalized as defined by regulatory framework for prompt corrective action.

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Represents the minimum amount of common equity Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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Ratio of Tier 1 risk-based capital to risk-weighted assets exceeding minimum required for capital adequacy as defined by regulatory framework.

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Ratio of minimum Tier 1 leverage capital to average assets required for capital adequacy as defined by regulatory framework.

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Ratio of minimum Tier 1 leverage capital to average assets categorized as well capitalized as defined by regulatory framework for prompt corrective action.

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