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Quarterly Data And Share Information (Tables) | 12 Months Ended
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Dec. 31, 2020
Quarterly Data And Share Information [Abstract] |
Schedule Of Quarterly Data |
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﻿Fiscal Year Ended 2020 |  | 1st Quarter |  | 2nd Quarter |  | 3rd Quarter |  | 4th Quarter
﻿Revenues |  | $ | 963 |  |  | 563 |  | $ | 765 |  | $ | 747
﻿Net loss |  |  | (527) |  |  | (554) |  |  | (813) |  |  | (1,754)
﻿Loss per common share |  | $ | (0.60) |  | $ | (0.60) |  | $ | (0.96) |  | $ | (1.92)
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﻿Fiscal Year Ended 2019 |  | 1st Quarter |  | 2nd Quarter |  | 3rd Quarter |  | 4th Quarter
﻿Revenues |  | $ | 1,171 |  | $ | 1,390 |  | $ | 1,215 |  | $ | 1,135
﻿Net income (loss) |  |  | (96) |  |  | 9 |  |  | (182) |  |  | (167)
﻿Income (loss) per common share |  | $ | (0.12) |  | $ | 0.01 |  | $ | (0.24) |  | $ | (0.12)
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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121640914&loc=d3e1280-108306 + Details
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