v2.4.0.8

Earnings per Common Share Other (Details) (Walmart [Member], Stock Options [Member], Common Class A [Member])	Jun. 30, 2013
Walmart [Member] | Stock Options [Member] | Common Class A [Member]
Diluted earnings per common share [Line Items]
Unvested Walmart Shares	809,772

X

- Definition

The number of unvested shares held by Walmart.

+ References

No definition available.

+ Details

Name:	gdot_UnvestedWalmartShares
Namespace Prefix:	gdot_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Details

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