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Consolidated Statements of Cash Flows - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2020
Mar. 31, 2020
Dec. 31, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Cash flows from operating activities:                  
Net income (loss)         $ (3,418,904) $ (3,546,511) $ (7,038,772)    
Discontinued operations net of tax $ 872,064 $ 818,273 $ 2,396,981 $ 1,147,136 3,206,875 5,665,177 3,782,224    
Net income (loss) from continuing operations (1,787,530) (1,883,418) (3,369,329) (1,187,553) (6,625,779) (9,211,688) (10,820,996)    
Adjustments to reconcile net income (loss) to net cash flows provided by (used in) operating activities:                  
Depreciation and amortization expense         4,748,565 4,404,175 2,982,703    
Deferred tax expense         21,802 65,408 81,886    
Share-based compensation         1,046,516 1,485,898 1,364,698    
Excess tax (benefit) expense derived from exercise of stock options         0 0 (81,886)    
Decrease in non-cash contingent consideration         (1,160,202) (804,167) 0    
Write off of deferred offering costs         440,091 0 0    
Increase in cash surrender value of life insurance policies over premiums paid         (154,611) 0 0    
Noncash interest expense         47,636 47,525 99,883    
Noncash investment gains         0 (26,315) (168,440)    
Net changes in assets and liabilities affecting operating activities:                  
Accounts receivable         (4,518,707) (1,399,012) (47,288)    
Inventories         2,131,347 1,106,175 528,153    
Prepaid, other current assets and other assets         1,210,489 (615,199) 676,750    
Accounts payable and other current liabilities         6,569,002 3,221,780 4,153,287    
Other long-term liabilities         (1,859,330) (729,820) (159,558)    
Net cash provided by (used in) operating activities from continuing operations         1,896,819 (2,455,240) (1,390,808)    
Discontinued operations         3,518,242 5,511,596 4,503,545    
Net cash provided by (used in) operating activities         5,415,061 3,056,356 3,112,737    
Cash flows from investing activities:                  
Additions to property and equipment         (140,817) (246,202) (455,569)    
Additions to intangible assets         (1,973,110) (772,944) (3,819,486)    
Proceeds from Life Insurance Policy         460,888 0 0    
Increase (Decrease) In Proceeds from Life Insurance Policy         (104,750) 0 0    
Cash paid for acquisition         0 (5,000,000) (20,000,000)    
Proceeds from sale of marketable securities         0 20,062,132 16,122,376    
Purchases of marketable securities         0 (11,745,138) (19,572,139)    
Net cash provided by (used in) investing activities         (1,757,789) 2,297,848 (27,724,818)    
Cash flows from financing activities:                  
Borrowings on line of credit         59,000,000 76,000,000 56,000,000    
Repayments on line of credit         (62,500,000) (77,500,000) (45,800,000)    
Proceeds from Stock Options Exercised         0 0 200,909    
Repurchase of common shares         (1,851,526) (3,494,921) (2,879,426)    
Payments of deferred equity offering costs         (135,405) 0 (383,310)    
Payments of Financing Costs         (10,000) (52,500) 0    
Payment for Contingent Consideration Liability, Financing Activities         (819,180) (1,033,108) 0    
Payments for Repurchase of Redeemable Noncontrolling Interest         (800,000)     $ 0 $ 0
Proceeds from Noncontrolling Interests         0 1,000,000 0    
Net cash provided by (used in) financing activities         (7,116,111) (5,080,529) 7,138,173    
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total         (3,458,839) 273,675 (17,473,908)    
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning Balance   $ 28,212,635   $ 27,938,960 28,212,635 27,938,960 45,412,868    
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Ending Balance $ 24,753,796   $ 28,212,635   24,753,796 28,212,635 27,938,960 $ 45,412,868  
Net cash paid (refunded) during the year for:                  
Interest         215,991 198,661 95,965    
Income taxes         (91,486) 16,694 15,441    
Noncash investing and financing activities:                  
Change in unpaid invoices for purchases of intangibles         (340,997) (576,837) (539,467)    
Deferred offering costs included in accounts payable and other accrued expenses         200,000 0 0    
Noncash increase in liabilities related to acquisition (see Note 3)         0 0 14,034,000    
Recognition of operating lease assets and liabilities through adoption of ASC 842         0 3,629,320 0    
Vesting of shares related to RediTrex approval         0 862,200 0    
Repurchase of subsidiary shares from noncontrolling interests         0 (800,000) 0    
Additions to intangible assets from final purchase price allocation         $ 0 $ 148,000 $ 0