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Consolidated Statements of Income and Comprehensive Income (Loss) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Revenues:                      
Revenues $ 8,319,861 $ 8,072,540 $ 9,055,483 $ 10,537,159 $ 10,261,534 $ 9,250,689 $ 9,598,177 $ 8,330,734 $ 35,985,043 $ 37,441,134 $ 34,388,295
Costs and expenses:                      
Cost of products sold                 8,811,248 8,653,020 7,421,316
Selling and marketing                 15,015,424 14,765,465 15,277,740
Research and development                 5,684,465 5,773,825 6,868,480
General and administrative                 9,780,026 10,196,299 9,974,384
Amortization                 4,371,300 4,434,120 4,134,557
Total costs and expenses                 43,662,463 43,822,729 43,676,477
Operating income (loss) (4,353,996) (1,563,395) (1,435,729) (324,300) (1,745,946) (1,208,686) (1,580,962) (1,846,001) (7,677,420) (6,381,595) (9,288,182)
Interest income                 26,081 75,345 243,364
Other Income                 2,187,140 0 0
Interest expense                 (98,031) (263,627) (246,186)
Net income (loss) from continuing operations                 (5,562,230) (6,569,877) (9,291,004)
Income tax (expense) benefit                 (34,891) (55,902) 79,316
Net income (loss) from continuing operations (4,387,576) (1,583,480) 724,684 (350,749) (1,787,530) (1,275,620) (1,679,211) (1,883,418) (5,597,121) (6,625,779) (9,211,688)
Discontinued operations net of tax 503,318 496,787 498,807 495,410 872,064 777,916 738,622 818,273 1,994,322 3,206,875 5,665,177
Net income (loss)                 (3,602,799) (3,418,904) (3,546,511)
Net loss at subsidiary attributable to noncontrolling interests                 95,212 79,496 8,752
Net income (loss) attributable to common shareholders $ (3,847,697) $ (1,055,278) $ 1,228,560 $ 166,828 $ (883,776) $ (481,737) $ (918,275) $ (1,055,620) $ (3,507,587) $ (3,339,408) $ (3,537,759)
Earnings (loss) per share attributable to common shareholders:                      
-Continuing operations-basic $ (0.29) $ (0.10) $ 0.05 $ (0.02) $ (0.12) $ (0.08) $ (0.11) $ (0.12) $ (0.37) $ (0.43) $ (0.60)
-Discontinued operations-basic 0.03 0.03 0.03 0.03 0.06 0.05 0.05 0.05 0.13 0.21 0.37
Basic (in USD per share) (0.26) (0.07) 0.08 0.01 (0.06) (0.03) (0.06) (0.07) (0.24) (0.22) (0.23)
-Continuing operations-diluted (0.29) (0.10) 0.05 (0.02) (0.12) (0.08) (0.11) (0.12) (0.37) (0.43) (0.60)
-Discontinued operations-diluted 0.03 0.03 0.03 0.03 0.06 0.05 0.05 0.05 0.13 0.21 0.37
Diluted (in USD per share) $ (0.26) $ (0.07) $ 0.08 $ 0.01 $ (0.06) $ (0.03) $ (0.06) $ (0.07) $ (0.24) $ (0.22) $ (0.23)
Weighted-average common shares outstanding:                      
Basic (in shares)                 14,904,834 15,162,184 15,396,098
Diluted (in shares)                 14,904,834 15,162,184 15,396,098
Product                      
Revenues:                      
Revenues                 $ 35,045,259 $ 35,840,673 $ 32,407,845
Other                      
Revenues:                      
Revenues                 $ 939,784 $ 1,600,461 $ 1,980,450