v3.2.0.727

Significant Customer Concentrations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Concentration Risk [Line Items]
Stock-based retailer incentive compensation	$ 614	$ 2,022	$ 2,520	$ 4,410
Customer Concentration Risk [Member] | Total Operating Revenues [Member] | Walmart [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	48.00%	54.00%	42.00%	58.00%
Customer Concentration Risk [Member] | Total Operating Revenues, Excluding Stock-Based Retailer Incentive Compensation [Member] | Walmart [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	48.00%	55.00%	43.00%	58.00%
Customer Concentration Risk [Member] | GPR Cards Activated (in units) [Member] | Four Largest Retailers Distributors [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	59.00%	71.00%	60.00%	72.00%
Customer Concentration Risk [Member] | Sales of Cash Transfer Products (in units) [Member] | Four Largest Retailers Distributors [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	81.00%	80.00%	81.00%	81.00%
Customer Concentration Risk [Member] | Settlement Assets [Member] | Walmart [Member]
Concentration Risk [Line Items]
Concentration risk, percentage (balance sheet disclosures)	63.00%		63.00%		22.00%
Customer Concentration Risk [Member] | Settlement Assets [Member] | Three Other Largest Retailer Distributors, as a Group [Member]
Concentration Risk [Line Items]
Concentration risk, percentage (balance sheet disclosures)	13.00%		13.00%		6.00%

X

- Definition

Settlement asset concentration derived from our products sold on our consolidated balance sheet

+ References

No definition available.

+ Details

Name:	gdot_ConcentrationOfRiskSettlementAssets
Namespace Prefix:	gdot_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

We recognize the fair value of shares issued to retail distributors on the vesting date or as our right to repurchase lapses, as applicable.

+ References

No definition available.

+ Details

Name:	gdot_StockBasedRetailerIncentiveCompensation
Namespace Prefix:	gdot_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- 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

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

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 275



-SubTopic 10



-Section 50



-Paragraph 18



-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 825



-SubTopic 10



-Section 50



-Paragraph 20



-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611



Reference 3: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 275



-SubTopic 10



-Section 50



-Paragraph 20



-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592



Reference 4: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 825



-SubTopic 10



-Section 50



-Paragraph 21



-Subparagraph (a)



-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	gdot_DistributorsByNameAxis=gdot_WalmartMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=gdot_TotalOperatingRevenuesExcludingStockBasedRetailerIncentiveCompensationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=gdot_GprCardsActivatedInUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	gdot_DistributorsByNameAxis=gdot_FourLargestRetailersDistributorsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=gdot_SalesOfCashTransferProductsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=gdot_SettlementAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	gdot_DistributorsByNameAxis=gdot_ThreeOtherLargestRetailerDistributorsAsGroupMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: