Stock-based Compensation (Narrative) (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | |
---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2017 |
Sep. 30, 2016 |
|
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |||
Options to purchase, Granted (in shares) | 50,000 | ||
Options cancelled to purchase common stock | 149,850 | ||
Options, Exercised (in shares) | 10,000 | ||
Stock-based compensation expense | $ 186 | $ 71 | |
Options [Member] | |||
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |||
Stock-based compensation expense | $ 100 | 200 | |
Employee Service-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options | $ 700 | $ 700 | |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | 3 years 2 months 13 days | ||
Common Stock [Member] | |||
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |||
Options, Exercised (in shares) | 10,000 |