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Long-Term Debt (Schedule Of Long-term Debt) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Line of Credit Facility [Line Items] |  |
Installment notes bearing interest at the rate of 5.0% to 6.5% per annum collateralized by vehicles with monthly payments including interest, insurance and maintenance of approximately $10 |  | $ 124,000
Total long-term debt |  | 124,000
Less current maturities |  | (51,000)
Long-term debt, less current maturities |  | 73,000
Periodic payments including interest, insurance and maintenance | $ 10 | $ 10
Maximum [Member] |  |
Line of Credit Facility [Line Items] |  |
Interest rate per annum | 6.50% | 6.50%
Minimum [Member] |  |
Line of Credit Facility [Line Items] |  |
Interest rate per annum | 5.00% | 5.00%

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + 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 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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