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Income Taxes (Schedule Of Deferred Income Tax Assets And Liabilities) (Details) - USD ($) | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Assets: |  |
Accruals not currently deductible | $ 6,478,146 | $ 5,111,242
Stock based compensation | 9,100,745 | 9,586,372
Other | 66,830 | 356,039
Total deferred income tax assets | 15,645,721 | 15,053,653
Liabilities: |  |
Excess tax over book depreciation | (30,725,471) | (39,835,025)
Goodwill | (27,799,640) | (23,341,226)
Intangible assets | (6,171,628) | (5,089,042)
Other | (2,403,131) | (1,309,849)
Total deferred income tax liability | (67,099,870) | (69,575,142)
Net deferred income taxes | $ (51,454,149) | $ (54,521,489)

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