Regulatory Requirements (Details) $ in Thousands	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Aggregate amount of net assets of subsidiaries	$ 214,600
Green Dot Corporation
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier one leverage capital	$ 653,063	$ 760,571
Tier one leverage capital to average assets	0.119	0.150
Tier one leverage capital required to be well capitalized	0.040	0.040
Tier one common equity	$ 653,063	$ 760,571
Tier one common equity to average assets	32.90%	42.60%
Tier one common equity required for capital adequacy to average assets	4.50%	4.50%
Tier one risk based capital	$ 653,063	$ 760,571
Tier one risk based capital to risk weighted assets	0.329	0.426
Tier one risk based capital required to be well capitalized	0.060	0.060
Tier one risk based capital required to be well capitalized to risk weighted assets	0.060	0.060
Capital	$ 677,794	$ 782,207
Capital to risk weighted assets	0.341	0.438
Capital required to be well capitalized	0.080	0.080
Capital required to be well capitalized to risk weighted assets	0.100	0.100
Green Dot Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier one leverage capital	$ 449,328	$ 362,697
Tier one leverage capital to average assets	0.084	0.073
Tier one leverage capital required to be well capitalized	0.040	0.040
Tier one leverage capital required to be well capitalized to average assets	0.050	0.050
Tier one common equity	$ 449,328	$ 362,697
Tier one common equity to average assets	29.70%	28.20%
Tier one common equity required for capital adequacy to average assets	4.50%	4.50%
Tier one common equity capital required to be well capitalized to average assets	6.50%	6.50%
Tier one risk based capital	$ 449,328	$ 362,697
Tier one risk based capital to risk weighted assets	0.297	0.282
Tier one risk based capital required to be well capitalized	0.060	0.060
Tier one risk based capital required to be well capitalized to risk weighted assets	0.080	0.080
Capital	$ 456,957	$ 370,207
Capital to risk weighted assets	0.303	0.288
Capital required to be well capitalized	0.080	0.080
Capital required to be well capitalized to risk weighted assets	0.100	0.100

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Amount of restricted net assets of consolidated and unconsolidated subsidiaries as of the end of the most recently completed fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(e)(3)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

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Amount of total capital as defined by regulatory framework.

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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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
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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.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1B

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Amount of Tier 1 leverage capital 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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