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Note 3 - Property and Equipment | 12 Months Ended
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Dec. 31, 2021
Notes to Financial Statements |
Property, Plant and Equipment Disclosure [Text Block] |
3. | Property and Equipment
Property and equipment as shown on the accompanying Consolidated Balance Sheets is composed of the following as of December 31, 2021 and 2020:
|  | 2021 |  |  | 2020 |
Equipment and furnishings |  | $ | 591,554 |  |  | $ | 543,836 |
Leasehold improvements |  |  | 115,605 |  |  |  | 115,605 |
Total property and equipment |  |  | 707,159 |  |  |  | 659,441 |
Accumulated depreciation and amortization |  |  | (550,221 | ) |  |  | (511,700 | )
Property and equipment, net |  | $ | 156,938 |  |  | $ | 147,741 |
Depreciation expense was $38,521 and $19,656 during the years ended December 31, 2021 and 2020, respectively.

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