Date the declared dividend will be paid, in CCYY-MM-DD format.

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Date the dividend to be paid was declared, in CCYY-MM-DD format.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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The percentage rate used to calculate dividend payments on preferred stock.

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Aggregate dividends paid during the period for each share of preferred stock outstanding.

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Aggregate dividends declared during the period for each share of preferred stock outstanding.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Percentage of vesting of award under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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Subsequent Events (Narrative) (Details) - $ / shares				9 Months Ended	12 Months Ended
Subsequent Events (Narrative) (Details) - $ / shares	Nov. 01, 2020	Oct. 22, 2020	Sep. 10, 2020	Sep. 30, 2020	Dec. 31, 2019
Subsequent Events [Member] \| Inducement Equity Incentive Plan 2020 [Member]
Subsequent Event [Line Items]
Number of shares reserved for issuance		200,000
Life of stock option awards granted		10 years
Subsequent Events [Member] \| Inducement Equity Incentive Plan 2020 [Member] \| First anniversary
Subsequent Event [Line Items]
Percentage of vesting of awards		33.33%
Subsequent Events [Member] \| Inducement Equity Incentive Plan 2020 [Member] \| 24 equal monthly installments after first anniversary
Subsequent Event [Line Items]
Percentage of vesting of awards		66.67%
6% Convertible Exchangeable Preferred Stock [Member]
Subsequent Event [Line Items]
Dividend declared, date			Sep. 10, 2020
Preferred stock dividend declared, amount per share			$ 0.15
Dividend rate on convertible exchangeable preferred stock (in percent)				6.00%	6.00%
6% Convertible Exchangeable Preferred Stock [Member] \| Subsequent Events [Member]
Subsequent Event [Line Items]
Dividends payable, date to be paid	Nov. 01, 2020
Dividend, record date	Oct. 16, 2020
Preferred stock, dividends per share, cash paid	$ 0.15