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Income Taxes (Significant components of the Company's deferred tax liabilities and assets) (Details) - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Deferred tax liabilities: |  |
Property and equipment | $ 4,218,000 | $ 4,242,000
Intangible assets | 22,355,000 | 21,425,000
Prepaid expenses | 477,000 | 405,000
Total deferred tax liabilities | 27,050,000 | 26,072,000
Deferred tax assets: |  |
Allowance for doubtful accounts | 56,000 | 43,000
Compensation | 1,134,000 | 1,093,000
Other accrued liabilities | 123,000 | 134,000
Deferred Tax Assets, Gross, Total | 1,313,000 | 1,270,000
Less: valuation allowance | 0 | 0
Total net deferred tax assets | 1,313,000 | 1,270,000
Net deferred tax liabilities | 25,737,000 | 24,802,000
Current portion of deferred tax assets | 341,000 | 361,000
Non-current portion of deferred tax liabilities | (26,078,000) | (25,163,000)
Net deferred tax liabilities | $ (25,737,000) | $ (24,802,000)

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