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SUBSEQUENT EVENTS (Details) - COVID-19 Pandemic	6 Months Ended
	Mar. 31, 2020
Minimum
Subsequent Event [Line Items]
Trial modifications, payment deferral period	30 days
Maximum
Subsequent Event [Line Items]
Trial modifications, payment deferral period	6 months

X

- Definition

Loan Restructuring, Trial Modifications, Payment Deferral Period

+ References

No definition available.

+ Details

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Namespace Prefix:	cash_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=cash_COVID19PandemicMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: