v2.4.0.8
Document And Entity Information Document (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Jun. 30, 2013
Jan. 31, 2014
Common Class A [Member]
Jan. 31, 2014
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-K      
Document Period End Date Dec. 31, 2013      
Document Fiscal Year Focus 2013      
Document Fiscal Period Focus Q4      
Amendment Flag false      
Entity Well-known Seasoned Issuer Yes      
Entity Voluntary Filers No      
Entity Current Reporting Status Yes      
Entity Public Float   $ 635.1    
Entity Common Stock, Shares Outstanding     37,797,987 0