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EMPLOYEE STOCK OWNERSHIP AND PROFIT SHARING PLANS (Details) |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Nov. 20, 2021 | Nov. 19, 2021 | Oct. 01, 2021 | Sep. 30, 2021 USD ($) hours $ / shares shares | Sep. 30, 2020 USD ($) $ / shares shares | Sep. 30, 2019 USD ($) $ / shares shares
EMPLOYEE STOCK OWNERSHIP AND PROFIT SHARING PLANS [Abstract] |  |  |  |  |  |
Number of hours of employment required for ESOP | hours |  |  |  | 1,000 |  |
Years of employment to be eligible for ESOP |  |  |  | 1 year |  |
Employee Stock Ownership Plan (ESOP), Expense | $ |  |  |  | $ 3,100,000 | $ 3,000,000 | $ 2,900,000
Percentage of benefits vested after credited service |  |  |  | 100.00% |  |
ESOP award vesting period |  |  |  | 7 years |  |
Number of shares (ESOP) released (in shares) |  |  |  | 54,985 | 157,909 | 98,753
Fair value of shares (ESOP) released (in dollars per share) | $ / shares |  |  |  | $ 52.48 | $ 19.22 | $ 32.61
Allocated and total ESOP shares withdrawn from ESOP by participant no longer with the company (in shares) |  |  |  | 22,960 | 59,865 | 79,926
Shares purchased for dividend reinvestment (in shares) |  |  |  | 4,192 | 5,662 | 5,336
Year-end ESOP shares [Abstract] |  |  |  |  |  |
Allocated shares (in shares) |  |  |  | 787,299 | 809,116 | 778,088
Unearned shares (in shares) |  |  |  | 0 | 0 | 0
Total ESOP shares (in shares) |  |  |  | 787,299 | 809,116 | 778,088
Fair value of unearned shares | $ |  |  |  | $ 0 | $ 0 | $ 0
Contribution expense to profit sharing plan included in compensation and benefits | $ |  |  |  | $ 3,100,000 | $ 3,100,000 | $ 3,000,000
Subsequent Event |  |  |  |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |  |  |  |
Employee contributions matched |  |  | 100.00% |  |  |
Percent of eligible compensation contributed | 6.00% | 4.00% | 6.00% |  |  |

X
- Definition The allocated and total shares or units in an ESOP withdrawn by participant no longer with the company or participant diversifying their holdings. + References No definition available. + Details
Name: | cash_AllocatedAndTotalEsopSharesWithdrawnFromEsopByParticipantNoLongerWithCompany
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- Definition The amount of contribution expense to profit sharing plan recognized during the period. + References No definition available. + Details
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Balance Type: | debit
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- References No definition available. + Details
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- Definition Refers to the fair value of unearned shares issued under employee stock ownership plan. + References No definition available. + Details
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- Definition Employee Stock Ownership Plan (ESOP), Vesting Period + References No definition available. + Details
Name: | cash_EmployeeStockOwnershipPlanESOPVestingPeriod
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Balance Type: | na
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- Definition The fair value of shares released as of the balance sheet date + References No definition available. + Details
Name: | cash_FairValueOfSharesEsopReleased
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Balance Type: | na
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- Definition The number of shares or units released during the period. + References No definition available. + Details
Name: | cash_NumberOfEsopSharesReleased
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- Definition This element represents number of hours required from employees to be eligible for Employee Stock Ownership Plan (ESOP) during the period. + References No definition available. + Details
Name: | cash_NumberofhoursofemploymentrequiredforESOP
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- Definition This elements represents percentage of benefits that vest after credited service. + References No definition available. + Details
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- Definition The number of shares purchased as at the end of the period for dividend reinvestment. + References No definition available. + Details
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- Definition Number of unearned shares for all classes of common stock and nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by an employee stock ownership plan (ESOP). + References No definition available. + Details
Name: | cash_UnearnedShares
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- Definition This element represents the number of years of employment required from employees to be eligible for Employee Stock Ownership Plan (ESOP) during the period. + References No definition available. + Details
Name: | cash_YearsOfEmploymentToBeEligibleForEsop
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
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- Definition The amount of plan compensation cost recognized during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929 + Details
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- Definition The shares or units in an ESOP trust that have been assigned to individual participant accounts based on a known formula. IRS rules require allocations to be nondiscriminatory generally based on compensation, length of service, or a combination of both. For any particular participant such shares or units may be vested, unvested, or partially vested. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929 + Details
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- Definition Sum of the allocated, committed-to-be-released and suspense shares of the entity held by the plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929 + Details
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- References No definition available. + Details
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- Details
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