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Income Taxes (Narrative) (Details) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2012 | Dec. 31, 2020
Proceeds from sale of common stock |  |  |  |  | $ 22,500,000 |
Net operating loss carry forwards | $ 22,416,000 |  | $ 22,416,000 |  |  |
Carryforwards utilize limit before the stock offering closed |  |  | 163,000 |  |  |
Unutilized operating loss carryforwards that will expire | 20,520,000 |  | 20,520,000 |  |  |
Reduced deferred tax assets and valuation allowance | $ 6,977,000 |  | $ 6,977,000 |  |  |
Deferred tax liability to be recorded |  |  |  |  |  | $ 473,000
Effective tax rate | 19.50% | 20.70% | 19.00% | 20.70% |  |
Additional bad debt deductions |  |  | $ 2,250,000 |  |  |
Deferred tax asset, valuation allowance | $ 0 |  | 0 |  |  |
Deferred tax asset | 4,400,000 |  | 4,400,000 |  |  | 4,700,000
Unrecognized tax benefits | $ 0 |  | $ 0 |  |  | $ 0
Minimum [Member] |  |  |  |  |  |
Net operating loss carryforwards, expiration year |  |  | 2024 |  |  |
Maximum [Member] |  |  |  |  |  |
Net operating loss carryforwards, expiration year |  |  | 2032 |  |  |

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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + 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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