Stockholders' Equity (ESPP) (Details) - ESPP - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | |
|---|---|---|---|---|---|
Mar. 31, 2016 |
Mar. 31, 2015 |
Jun. 30, 2016 |
Sep. 30, 2016 |
Dec. 31, 2016 |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||
| Share-based compensation expense | $ 77 | $ 73 | |||
| Expected dividend yield assumption (in Percent) | 0.50% | ||||
| Expected volatility assumption (in Percent) | 24.71% | ||||
| Risk-free interest rate assumption (in Percent) | 22.00% | ||||
| Expected life assumption (in Years) | 3 months | ||||
| Forecast | |||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||
| Risk-free interest rate assumption (in Percent) | 49.00% | 55.00% | 61.00% | ||
| Expected life assumption (in Years) | 6 months | 9 months | 1 year | ||