Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Interest and penalties accrued | $ 0 | |
| Reconciliation of the beginning and ending amount of gross unrecognized tax benefits | ||
| Balance at beginning of year | 1,360 | $ 898 |
| Additions based on tax positions related to the current year | 1,045 | 462 |
| Balance at end of year | 2,405 | 1,360 |
| Research and development tax credit carryforward | ||
| Unrecognized tax benefits increased | $ 1,000 | $ 500 |