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Discontinued Operations (Schedule Of The Amounts In Net Loss From Discontinued Operations) (FY) (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jan. 26, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Net income from discontinued operations |  |  | $ 1,127
Sale of methane facility assets | $ 2,650 |  |
Discontinued Operations [Member] | Methane Facilities [Member] |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Revenues |  |  | 6
Production costs and taxes |  |  | (40)
Depreciation, depletion, and amortization |  |  | (4)
Interest income |  |  |
Gain on sale of assets |  |  | 1,165
Deferrred income tax benefit |  |  |
Net income from discontinued operations |  |  | $ 1,127

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