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Consolidated Statement of Changes in Stockholders' Equity (Unaudited) - USD ($) | Common Stock Outstanding [Member] | Additional Paid-in Capital [Member] | Treasury Stock, Common [Member] | Deferred Compensation, Share-Based Payments [Member] | Retained Earnings [Member] | Total
--- | --- | --- | --- | --- | --- | ---
Balance (in shares) at Dec. 31, 2022 | 27,044,900 |  |  |  |  |
Balance at Dec. 31, 2022 | $ 195,471 | $ 94,048,603 | $ (3,749,027) | $ (5,697,900) | $ (70,863,049) | $ 13,934,098
Issuance of common stock under equity incentive plan (in shares) | 1,421,250 |  |  |  |  |
Issuance of common stock under equity incentive plan | $ 1,421 | 2,638,529 | 0 | (2,444,054) | 0 | 195,896
Deferred compensation amortization | 0 | 0 | 0 | 308,676 | 0 | 308,676
Purchase of treasury stock costs | 0 | 0 | (8,529) | 0 | 0 | (8,529)
Net income (loss) | $ 0 | 0 | 0 | 0 | 14,833 | 14,833
Balance (in shares) at Mar. 31, 2023 | 28,466,150 |  |  |  |  |
Balance at Mar. 31, 2023 | $ 196,892 | 96,687,132 | (3,757,556) | (7,833,278) | (70,848,216) | 14,444,974
Balance (in shares) at Dec. 31, 2022 | 27,044,900 |  |  |  |  |
Balance at Dec. 31, 2022 | $ 195,471 | 94,048,603 | (3,749,027) | (5,697,900) | (70,863,049) | 13,934,098
Net income (loss) |  |  |  |  |  | (501,039)
Balance (in shares) at Sep. 30, 2023 | 28,506,406 |  |  |  |  |
Balance at Sep. 30, 2023 | $ 196,932 | 97,105,455 | (3,974,156) | (7,078,957) | (71,364,088) | 14,885,186
Balance (in shares) at Mar. 31, 2023 | 28,466,150 |  |  |  |  |
Balance at Mar. 31, 2023 | $ 196,892 | 96,687,132 | (3,757,556) | (7,833,278) | (70,848,216) | 14,444,974
Issuance of common stock under equity incentive plan (in shares) | 111,456 |  |  |  |  |
Issuance of common stock under equity incentive plan | $ 111 | 354,199 | 0 | (34,452) | 0 | 319,858
Deferred compensation amortization | 0 | 0 | 0 | 343,123 | 0 | 343,123
Purchase of treasury stock costs | 0 | 0 | (10,507) | 0 | 0 | (10,507)
Net income (loss) | $ 0 | 0 | 0 | 0 | 205,041 | 205,041
Reversal of deferred compensation amortization that did not vest (in shares) | (115,000) |  |  |  |  |
Reversal of deferred compensation amortization that did not vest | $ (115) | (188,088) | 0 | 103,091 | 0 | (85,112)
Balance (in shares) at Jun. 30, 2023 | 28,462,606 |  |  |  |  |
Non-cash return of common stock | $ 0 | 0 | (156,162) | 0 | 0 | (156,162)
Balance at Jun. 30, 2023 | $ 196,888 | 96,853,243 | (3,924,225) | (7,421,516) | (70,643,175) | 15,061,215
Issuance of common stock under equity incentive plan (in shares) | 43,800 |  |  |  |  |
Issuance of common stock under equity incentive plan | $ 44 | 252,212 | 0 | 0 | 0 | 252,256
Deferred compensation amortization | 0 | 0 | 0 | 342,559 | 0 | 342,559
Purchase of treasury stock costs | 0 | 0 | (49,931) | 0 | 0 | (49,931)
Net income (loss) | $ 0 | 0 | 0 | 0 | (720,913) | (720,913)
Balance (in shares) at Sep. 30, 2023 | 28,506,406 |  |  |  |  |
Balance at Sep. 30, 2023 | $ 196,932 | 97,105,455 | (3,974,156) | (7,078,957) | (71,364,088) | 14,885,186
Balance (in shares) at Dec. 31, 2023 | 28,671,606 |  |  |  |  |
Balance at Dec. 31, 2023 | $ 197,087 | 97,479,830 | (4,362,150) | (6,907,775) | (71,338,153) | 15,068,839
Issuance of common stock under equity incentive plan (in shares) | 107,600 |  |  |  |  |
Issuance of common stock under equity incentive plan | $ 107 | 153,118 | 0 | 0 | 0 | 153,225
Deferred compensation amortization |  |  |  | 346,047 |  | 346,047
Purchase of treasury stock costs | 0 | 0 | (44,823) | 0 | 0 | (44,823)
Net income (loss) | $ 0 | 0 | 0 | 0 | (250,188) | (250,188)
Balance (in shares) at Mar. 31, 2024 | 28,779,206 |  |  |  |  |
Balance at Mar. 31, 2024 | $ 197,194 | 97,632,948 | (4,406,973) | (6,561,728) | (71,588,341) | 15,273,100
Balance (in shares) at Dec. 31, 2023 | 28,671,606 |  |  |  |  |
Balance at Dec. 31, 2023 | $ 197,087 | 97,479,830 | (4,362,150) | (6,907,775) | (71,338,153) | 15,068,839
Net income (loss) |  |  |  |  |  | 2,676,571
Balance (in shares) at Sep. 30, 2024 | 29,811,487 |  |  |  |  |
Balance at Sep. 30, 2024 | $ 198,226 | 99,447,552 | (4,755,916) | (7,297,234) | (68,661,582) | 18,931,046
Balance (in shares) at Mar. 31, 2024 | 28,779,206 |  |  |  |  |
Balance at Mar. 31, 2024 | $ 197,194 | 97,632,948 | (4,406,973) | (6,561,728) | (71,588,341) | 15,273,100
Issuance of common stock under equity incentive plan (in shares) | 994,049 |  |  |  |  |
Issuance of common stock under equity incentive plan | $ 994 | 1,610,320 | 0 | (1,497,300) | 0 | 114,014
Deferred compensation amortization |  |  |  | 346,048 |  | 346,048
Purchase of treasury stock costs | 0 | 0 | (104,946) | 0 | 0 | (104,946)
Net income (loss) | $ 0 | 0 | 0 | 0 | 75,492 | 75,492
Issuance of common stock under employee stock purchase plan (in shares) | 6,180 |  |  |  |  |
Issuance of common stock under employee stock purchase plan | $ 6 | 10,504 | 0 | 0 | 0 | 10,510
Reversal of deferred compensation amortization that did not vest (in shares) | (15,000) |  |  |  |  |
Reversal of deferred compensation amortization that did not vest | $ (15) | (31,305) | 0 | 31,320 | 0 | 0
Balance (in shares) at Jun. 30, 2024 | 29,764,435 |  |  |  |  |
Balance at Jun. 30, 2024 | $ 198,179 | 99,222,467 | (4,511,919) | (7,681,660) | (71,512,849) | 15,714,218
Issuance of common stock under equity incentive plan (in shares) | 21,100 |  |  |  |  |
Issuance of common stock under equity incentive plan | $ 21 | 185,324 | 0 | 0 | 0 | 185,345
Deferred compensation amortization | 0 | 0 | 0 | 384,426 | 0 | 384,426
Purchase of treasury stock costs | 0 | 0 | (243,997) | 0 | 0 | (243,997)
Net income (loss) | $ 0 | 0 | 0 | 0 | 2,851,267 | 2,851,267
Issuance of common stock under employee stock purchase plan (in shares) | 25,952 |  |  |  |  |
Issuance of common stock under employee stock purchase plan | $ 26 | 39,761 | 0 | 0 | 0 | 39,787
Balance (in shares) at Sep. 30, 2024 | 29,811,487 |  |  |  |  |
Balance at Sep. 30, 2024 | $ 198,226 | $ 99,447,552 | $ (4,755,916) | $ (7,297,234) | $ (68,661,582) | $ 18,931,046

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