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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

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