Equity Incentive Plan (Details) - USD ($) $ in Thousands |
3 Months Ended | ||
|---|---|---|---|
Mar. 31, 2017 |
Mar. 31, 2016 |
Dec. 31, 2016 |
|
| Equity Incentive Plan (Details) [Line Items] | |||
| Equity awards granted | 0 | ||
| Compensation expense for stock options | $ 147 | $ 321 | |
| Unamortized cost of options | $ 618 | ||
| Weighted-average period to recognize currently unrecognized compensation expense | 1 year 3 months 18 days | ||
| Options exercisable | 1,043,333 | 960,000 | |
| Weighted-average remaining contractual life of the options outstanding | 7 years 9 months 18 days | ||
| Former Chief Operating Officer | |||
| Equity Incentive Plan (Details) [Line Items] | |||
| Compensation expense for stock options | $ 0 | ||
| Accelerated vesting, number of shares | 33,333 | ||
| Total number of stock options vested | 100,000 | 100,000 | |