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CAPITAL REQUIREMENTS AND RESTRICTIONS ON RETAINED EARNINGS - Financial Measures of Capital (Details) | Sep. 30, 2021 | Sep. 30, 2020
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Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Tier 1 (core) capital (to adjusted total assets), ratio | 7.67% | 6.58%
Tier 1 (core) capital (to adjusted total assets), minimum requirement for capital adequacy purposes, ratio | 4.00% | 4.00%
Tier 1 (core) capital (to adjusted total assets), minimum requirement to be well capitalized under prompt corrective action provisions, ratio | 5.00% | 5.00%
Common equity Tier 1 (to risk-weighted assets), actual ratio | 12.12% | 11.78%
Common equity Tier 1 (to risk-weighted assets), minimum requirement for capital adequacy purposes, ratio | 4.50% | 4.50%
Common equity Tier 1 (to risk-weighted assets), minimum requirement to be well capitalized under prompt corrective action provisions, ratio | 6.50% | 6.50%
Tier 1 (core) capital ( to risk weighted assets), ratio | 0.1246 | 0.1218
Tier 1 (core) capital (to risk-weighted assets), minimum requirement for capital adequacy purposes, ratio | 0.0600 | 0.0600
Tier 1 (core) capital (to risk-weighted assets), minimum requirement to be well capitalized under prompt corrective action provisions, ratio | 0.0800 | 0.0800
Total qualifying capital (to risk-weighted assets), ratio | 15.45% | 15.30%
Total qualifying capital (to risk-weighted assets), minimum requirement for capital adequacy purposes, ratio | 8.00% | 8.00%
Total qualifying capital (to risk-weighted assets), minimum requirement to be well capitalized under prompt corrective action provisions, ratio | 10.00% | 10.00%
MetaBank |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Tier 1 (core) capital (to adjusted total assets), ratio | 8.69% | 7.56%
Common equity Tier 1 (to risk-weighted assets), actual ratio | 14.11% | 13.96%
Tier 1 (core) capital ( to risk weighted assets), ratio | 0.1413 | 0.1400
Total qualifying capital (to risk-weighted assets), ratio | 15.38% | 15.26%

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- Definition The minimum Tier One risk weighted assets ratio required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References No definition available. + Details
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- Definition The amount of Tier 1 risk-weighted assets required to be categorized as well capitalized under the regulatory framework for prompt corrective action. + References No definition available. + Details
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- Definition The total qualifying capital ratio (total capital divided by risk weighted assets) required to be categorized as "well capitalized", in the regulatory framework for prompt corrective action. + References No definition available. + Details
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- Definition The amount of Tier 1 Risk Based Capital ratio required to be categorized as well capitalized under the regulatory framework for prompt corrective action. + References No definition available. + Details
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- Definition Tier one (core) capital divided by adjusted total assets. + References No definition available. + Details
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- Definition The minimum Tier One risk based capital ratio required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References No definition available. + Details
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- Definition The minimum total qualifying capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References No definition available. + Details
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