v3.7.0.1
Loans to Bank Customers Loan Summary (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more $ 15 $ 8
Total outstanding loans to bank customers $ 7,539 $ 6,336
Percentage of outstanding loans 100.00% 100.00%
Financing Receivables, 30 to 59 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more $ 15 $ 0
Percentage of outstanding loans 0.20% 0.00%
Financing Receivables, 60 to 89 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more $ 0 $ 6
Percentage of outstanding loans 0.00% 0.10%
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more $ 0 $ 2
Percentage of outstanding loans 0.00% 0.00%
Financing Receivables, Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Percentage of outstanding loans 0.20% 0.10%
Financing Receivables, 1 to 29 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due, current $ 7,524 $ 6,328
Percentage of outstanding loans 99.80% 99.90%
Residential Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more $ 9 $ 6
Total outstanding loans to bank customers 3,665 3,724
Residential Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more 9 0
Residential Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more 0 6
Residential Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more 0 0
Residential Portfolio Segment [Member] | Financing Receivables, 1 to 29 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due, current 3,656 3,718
Commercial Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more 0 0
Total outstanding loans to bank customers 242 366
Commercial Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more 0 0
Commercial Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more 0 0
Commercial Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more 0 0
Commercial Portfolio Segment [Member] | Financing Receivables, 1 to 29 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due, current 242 366
Consumer Portfolio Segment [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more 6 2
Total outstanding loans to bank customers 1,669 1,744
Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more 6 0
Consumer Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more 0 0
Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more 0 2
Consumer Portfolio Segment [Member] | Financing Receivables, 1 to 29 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due, current 1,663 1,742
Unallocated Financing Receivables [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more 0 0
Total outstanding loans to bank customers 1,963 502
Unallocated Financing Receivables [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more 0 0
Unallocated Financing Receivables [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more 0 0
Unallocated Financing Receivables [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due 30 days or more 0 0
Unallocated Financing Receivables [Member] | Financing Receivables, 1 to 29 Days Past Due [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Past due, current $ 1,963 $ 502