Long-Term Incentive Plan Units (Narrative) (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 12, 2017 |
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||
| Common Stock, Capital Shares Reserved for Future Issuance | 1,922,188 | 1,922,188 | |||
| Share-based LTIP expense | $ 97 | $ 101 | $ 285 | $ 300 | |
| Long-Term Incentive Plan Units [Member] | |||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||
| LTIP Unit Grants in Period | 10,002 | 8,403 | 10,002 | 8,403 | |
| Director [Member] | Long-Term Incentive Plan Units [Member] | |||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||
| LTIP Unit Grants in Period | 10,002 | ||||