Loans to Bank Customers - Troubled Debt Restructurings (Details) - USD ($) $ in Thousands |
Jun. 30, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Residential | ||
| Loan Modifications [Line Items] | ||
| Unpaid principal balance | $ 382 | $ 97 |
| Carrying value | 291 | 54 |
| Commercial Loans | ||
| Loan Modifications [Line Items] | ||
| Unpaid principal balance | 255 | 270 |
| Carrying value | 10 | 31 |
| Installment Loans | ||
| Loan Modifications [Line Items] | ||
| Unpaid principal balance | 375 | 367 |
| Carrying value | $ 168 | $ 104 |