Property and Equipment Summary of Property and Equipment (Details) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Property and Equipment [Line Items] | ||
| Furniture and fixtures | $ 733 | $ 739 |
| Computer hardware and software | 603 | 649 |
| Leasehold improvements | 131 | 145 |
| Property and equipment, gross | 1,467 | 1,533 |
| Less: accumulated depreciation and amortization | (1,340) | (1,261) |
| Property and equipment, net | $ 127 | $ 272 |