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Income Taxes (Narrative) (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Dec. 31, 2019
Income Taxes [Line Items] |  |  |
Valuation allowance | $ 11,090,000 |  | $ 10,704,000
Federal net operating loss carryforwards | 35,400,000 |  |
Deferred tax asset |  |  | $ 65,000
Refundable credits | 130,000 |  |
Refundable credits |  | $ 130,000 |
Tax Period Between 2021 And 2037 [Member] |  |  |
Income Taxes [Line Items] |  |  |
Federal net operating loss carryforwards | 30,100,000 |  |
Indefinite Tax Period [Member] |  |  |
Income Taxes [Line Items] |  |  |
Federal net operating loss carryforwards | $ 5,300,000 |  |
Minimum [Member] | Tax Period Between 2021 And 2037 [Member] |  |  |
Income Taxes [Line Items] |  |  |
Federal net operating loss carryforwards expiration between, years | Jan. 01, 2021 |  |
Maximum [Member] | Tax Period Between 2021 And 2037 [Member] |  |  |
Income Taxes [Line Items] |  |  |
Federal net operating loss carryforwards expiration between, years | 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 Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable. + 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(8)) -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(10)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
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