v3.7.0.1
Loans to Bank Customers Credit Quality Indicators (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Outstanding Loans [Line Items]    
Loans to bank customers, carrying amount $ 7,258 $ 6,059
Non-Classified [Member]    
Outstanding Loans [Line Items]    
Loans to bank customers, carrying amount 6,576 5,336
Classified [Member]    
Outstanding Loans [Line Items]    
Loans to bank customers, carrying amount 963 1,000
Residential Portfolio Segment [Member] | Non-Classified [Member]    
Outstanding Loans [Line Items]    
Loans to bank customers, carrying amount 2,993 3,036
Residential Portfolio Segment [Member] | Classified [Member]    
Outstanding Loans [Line Items]    
Loans to bank customers, carrying amount 672 688
Commercial Portfolio Segment [Member] | Non-Classified [Member]    
Outstanding Loans [Line Items]    
Loans to bank customers, carrying amount 242 366
Commercial Portfolio Segment [Member] | Classified [Member]    
Outstanding Loans [Line Items]    
Loans to bank customers, carrying amount 0 0
Consumer Portfolio Segment [Member] | Non-Classified [Member]    
Outstanding Loans [Line Items]    
Loans to bank customers, carrying amount 1,378 1,432
Consumer Portfolio Segment [Member] | Classified [Member]    
Outstanding Loans [Line Items]    
Loans to bank customers, carrying amount 291 312
Unallocated Financing Receivables [Member] | Non-Classified [Member]    
Outstanding Loans [Line Items]    
Loans to bank customers, carrying amount 1,963 502
Unallocated Financing Receivables [Member] | Classified [Member]    
Outstanding Loans [Line Items]    
Loans to bank customers, carrying amount $ 0 $ 0