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Commitments and Contingencies (Details)	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 18, 2019 officer
Commitments and Contingencies Disclosure [Abstract]
Number of former officers name as defendants | officer			2
Loss contingency accrual | $	$ 0	$ 0

X

- Definition

Loss Contingency, Number Of Former Officers Name As Defendants

+ References

No definition available.

+ Details

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Namespace Prefix:	gdot_
Data Type:	xbrli:integerItemType
Balance Type:	na
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- References

No definition available.

+ Details

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X

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-10

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