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Stock Based Compensation (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Compensation expense | $ 600 | $ 500 | $ 1,300 | $ 1,300 |
Shares granted |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award expiration Period |  |  | 10 years |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  | 3 years |  |
Unrecognized compensation cost related to nonvested shares | $ 756 |  | $ 756 |  |
Weighted average period related to compesation cost |  |  | 2 years 4 months 24 days |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 196,077 |  | 196,077 |  | 299,778
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost (in Dollars) |  |  | $ 887 | $ 181 |
Restricted Stock [Member] |  |  |  |  |
Shares granted |  |  | 29,423 | 0 |
Restricted shares granted | 0 | 1,000 | 23,018 | 56,164 |
Unrecognized compensation cost related to nonvested shares | $ 920 |  | $ 920 |  |
Weighted average period related to compesation cost |  |  | 1 year 1 month 6 days |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number | 29,423 |  | 29,423 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 29,423 |  | 29,423 |  |
Performance Shares [Member] |  |  |  |  |
Maximum number of shares of common stock or equivalents issued |  |  | 69,627 |  |
Shares granted | 0 |  | 19,614 |  |
Unrecognized compensation cost related to nonvested shares | $ 822 |  | $ 822 |  |
Weighted average period related to compesation cost |  |  | 1 year 9 months 18 days |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number | 86,009 |  | 86,009 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 151,772 |  | 151,772 |  |
Performance unit shares to satisfy tax obligation created from vesting |  |  | 26,955 |  |

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