Stock Compensation - Director Stock Grant - Narrative (Details) - Restricted Shares - USD ($)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining recognition period	2 years 1 month 6 days
Unrecognized compensation cost	$ 1,800,000
Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual restricted shares award (in shares)	58,000
Total stock compensation expense recognized	$ 400,000	$ 300,000	$ 500,000
Remaining recognition period	3 months
Unrecognized compensation cost	$ 100,000

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

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Value of shares of stock issued attributable to transactions classified as other.

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