Equtiy-Based Compensation (Summary of Share-based Compensation Awards) (Details) - Restricted Share Plan - Unvested restricted shares - $ / shares	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Number of Common Shares
Beginning Balance (in shares)	322,242	382,510	9,921
Granted (in shares)	15,000	0	380,592
Vested (in shares)	(60,001)	(60,268)	(2,411)
Forfeitures (in shares)	0	0	(5,592)
Ending Balance (in shares)	277,241	322,242	382,510
Weighted-Average Issue Price
Beginning Balance, Weighted-Average Issue Price (usd per share)	$ 21.41	$ 21.47	$ 22.42
Granted, Weighted-Average Issue Price (usd per share)	17.50	0	21.45
Vested, Weighted-Average Issue Price (usd per share)	21.48	21.78	22.40
Forfeitures, Weighted-Average Issue Price (usd per share)	0	0	21.45
Ending Balance, Weighted-Average Issue Price (usd per share)	$ 21.18	$ 21.41	$ 21.47

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

+ Details

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