Shareholders Equity - Stock Option Activity, Narrative (Details) - Stock options - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Share Compensation Plan
Unrecognized stock based compensation to be recognized over a period	$ 0		$ 0
Aggregate intrinsic value of options outstanding	0		$ 0
Stock based compensation expense	$ 0	$ 1,867
Granted (in shares)	0		0

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

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Amount of cost to be recognized for option under share-based payment arrangement.

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

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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