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Note 15 - COVID-19 (Details Textual) - Small Businesses and Not-for-Profit Corporations [Member] - Forecast [Member] | 12 Months Ended
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Dec. 31, 2021 USD ($)
Operating Lease, Lease Income, Total | $ 776,000
Rental Income [Member] | Customer Concentration Risk [Member] |
Concentration Risk, Percentage | 37.00%

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