v3.20.1

Long-Term Incentive Plan Units (Narrative) (Details) - USD ($) $ in Millions |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 04, 2020 | Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based long term incentive plan unit expense |  | $ 0.2 | $ 0.1 |  |
Capital shares reserved for future issuance (in shares) |  | 1,816,861 |  | 1,832,309 |
Long-Term Incentive Plan Units [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |  | 0 | 0 |  |
Grants in Period (in shares) |  | 60,939 |  |  |
Director [Member] | Long-Term Incentive Plan Units [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Grants in Period (in shares) |  | 14,552 |  |  |
Dedicated or partially dedicated personnel [Member] | Long-Term Incentive Plan Units [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
LTIP Unit Grants in Period (in units) | 14,811 |  |  |  |
Manager [Member] | Long-Term Incentive Plan Units [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |  | 0 | 0 |  |
Vest December 13, 2020 [Member] | Dedicated or partially dedicated personnel [Member] | Long-Term Incentive Plan Units [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Grants in Period (in shares) |  | 12,818 |  |  |
Vest December 11, 2020 [Member] | Dedicated or partially dedicated personnel [Member] | Long-Term Incentive Plan Units [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Grants in Period (in shares) |  | 8,691 |  |  |
Vest December 13, 2021 [Member] | Dedicated or partially dedicated personnel [Member] | Long-Term Incentive Plan Units [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Grants in Period (in shares) |  | 10,067 |  |  |
Non-controlling interest in Operating Partnership [Member] | Non-controlling Interest |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Operating Partnership LTIP Units Redeemed (in units) |  |  |  |  | 503,988

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