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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Unvested

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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- Definition

Aggregate number of common shares reserved for future issuance.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Net number of share options (or share units) granted during the period.

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- Definition

Number of share options (or share units) exercised during the current period.

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Long-Term Incentive Plan Units (Narrative) (Details) - USD ($) $ in Thousands									12 Months Ended
	Dec. 13, 2019	Nov. 29, 2019	Nov. 14, 2019	Sep. 12, 2019	Sep. 11, 2019	Dec. 12, 2018	Sep. 12, 2018	Mar. 07, 2018	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									$ 475	$ 415
Capital shares reserved for future issuance (in shares)									1,832,309	1,874,223
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									13,092	3,334
Grants in Period (in shares)									46,128	39,432
Non Manager [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)	22,885				14,552
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period				3,610					3,610	3,334
Director [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)							14,440
Grants in Period (in shares)									14,552	14,440
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)						17,383		1,723
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		1,874	7,608						9,482	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, 2019 [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)										8,692
Vest December 12, 2019 [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)										5,886
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	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