Stock-based Compensation (Narrative) (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |
---|---|---|---|
Jun. 30, 2017 |
Jun. 30, 2017 |
Jun. 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 | 10,350 | ||
Options, Exercised (in shares) | 10,000 | ||
Stock-based compensation expense | $ 132 | $ 57 | |
Options [Member] | |||
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |||
Stock-based compensation expense | $ 100 | 100 | |
Employee Service-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options | $ 900 | $ 900 | |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | 3 years 4 months 24 days | ||
Common Stock [Member] | |||
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | |||
Options, Exercised (in shares) | 10,000 |