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Income Taxes (Narrative) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2012
Proceeds from sale of common stock |  |  | $ 22,500,000
Net operating loss carry forwards | $ 22,416,000 |  |
Carryforwards utilize limit before the stock offering closed | 163,000 |  |
Unutilized operating loss carryforwards that will expire | 20,520,000 |  |
Reduced deferred tax assets and valuation allowance | 6,977,000 |  |
Deferred tax liability to be recorded | $ 473,000 |  |
Effective tax rate | 18.00% | 20.00% |
Additional bad debt deductions | $ 2,250,000 |  |
Deferred tax asset | 4,747,000 | $ 1,721,000 |
Deferred tax asset, valuation allowance | 0 |  |
Unrecognized tax benefits | $ 0 | $ 0 |
Minimum [Member] |  |  |
Net operating loss carryforwards, expiration date | Jan. 01, 2024 |  |
Maximum [Member] |  |  |
Net operating loss carryforwards, expiration date | Dec. 31, 2032 |  |

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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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