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Shareholders' Equity (Share Repurchases, Cumberland Emerging Technologies and Cumberland Foundation Narrative) (Details) - USD ($)
 1 Months Ended 12 Months Ended
Nov. 27, 2019
Apr. 30, 2019
Apr. 30, 2014
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
May 31, 2010
Equity, Class of Treasury Stock [Line Items]              
Repurchase of common shares, value       $ 1,410,484 $ 1,839,471 $ 3,486,835  
Amount available under current repurchase program       4,800,000      
Exercise of options and related tax benefit   $ 1,000,000          
Payments to acquire interest in subsidiaries     $ 300,000        
Loans Forgiven in Exchange For Share Issued, Amount     $ 700,000        
Charitable contribution of shares, shares         50,000    
Committed cash contributions       $ 25,000 $ 50,000    
Vesting of common stock           $ 862,200  
HongKong WinHealth Pharma Group Co. Limited              
Equity, Class of Treasury Stock [Line Items]              
Investment in CET   1,000,000          
Gloria Pharmaceuticals              
Equity, Class of Treasury Stock [Line Items]              
Exchange for consideration, amount   $ 800,000          
Nordic              
Equity, Class of Treasury Stock [Line Items]              
Vesting of common stock, shares 180,000            
Vesting of common stock $ 900,000            
Common stock              
Equity, Class of Treasury Stock [Line Items]              
Repurchase of common shares, shares       438,359 503,626 623,478  
Repurchase of common shares, value       $ 1,410,484 $ 1,839,471 $ 3,486,835  
Vesting of common stock, shares           180,000  
Vesting of common stock           $ 862,200  
Shares Repurchase, All, Except Settlement of Tax Liabilities Related to Exercise of Stock Options              
Equity, Class of Treasury Stock [Line Items]              
Repurchase of common shares, shares       438,359 503,626 623,478  
Repurchase of common shares, value       $ 1,400,000 $ 1,800,000 $ 3,500,000  
Share Repurchase Program Authorized in 2010              
Equity, Class of Treasury Stock [Line Items]              
Share repurchase program, number of shares authorized to be repurchased             $ 10,000,000