v2.4.0.8
Document And Entity Information Document
6 Months Ended
Jun. 30, 2013
Jul. 31, 2013
Common Class A [Member]
Jul. 31, 2013
Common Class B [Member]
Entity Information [Line Items]      
Entity Registrant Name GREEN DOT CORP    
Trading Symbol GDOT    
Entity Central Index Key 0001386278    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Document Type 10-Q    
Document Period End Date Jun. 30, 2013    
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus Q2    
Amendment Flag false    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Common Stock, Shares Outstanding   32,727,582 3,874,858