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Income Taxes (Narrative) (Q3) (Details) - USD ($) | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2019
Income Taxes [Line Items] |  |  |  |
Unrecognized tax benefits |  | $ 0 |  | $ 0
Federal net operating loss carryforwards |  | 33,800,000 |  |
Deferred tax asset | $ 0 | $ 65,000 | $ 130,000 |
Federal tax rate | 21.00% | 21.00% | 21.00% |
Estimated annual effective tax rate | 0.00% |  |  |
Refundable credits | $ 130,000 | $ 130,000 |  |
Tax Period Between 2020 And 2037 [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Federal net operating loss carryforwards |  | 31,500,000 |  |
Indefinite Tax Period [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Federal net operating loss carryforwards |  | $ 2,300,000 |  |
Minimum [Member] | Tax Period Between 2020 And 2037 [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Federal net operating loss carryforwards expiration between, years | Jan. 01, 2020 | Dec. 31, 2020 |  |
Maximum [Member] | Tax Period Between 2020 And 2037 [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Federal net operating loss carryforwards expiration between, years | Dec. 31, 2037 | Dec. 31, 2037 |  |

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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Carrying amount due after one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(5)(c)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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