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CONDENSED STATEMENTS OF OPERATIONS - USD ($)
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Sales, net $ 44,742,350 $ 50,073,725
Cost of sales:    
Total cost of sales 29,174,429 22,078,938
Gross profit 15,567,921 27,994,787
Operating expenses:    
Sales and marketing 1,017,884 931,231
Research and development 95,538 149,283
General and administrative 4,728,481 3,493,236
Total operating expenses 5,841,903 4,573,750
Income from operations 9,726,018 23,421,037
Unrealized gain on equity securities 5,899,879  
Other income - TIA 355,089  
Interest and other income 34,912 90,807
Interest expense (47,105) (65,095)
Income before income taxes 13,400,023 24,550,721
Provision for income taxes 5,783,568 6,594,837
Net income 7,616,455 17,955,884
Preferred Stock dividend requirements (58,111) (64,938)
Net income applicable to common shareholders $ 7,558,344 $ 17,890,946
Basic earnings per share $ 0.23 $ 0.53
Diluted earnings per share $ 0.23 $ 0.52
Weighted average common shares outstanding:    
Basic (in shares) 33,265,453 33,967,771
Diluted (in shares) 33,594,142 34,378,683
Costs of manufactured product    
Cost of sales:    
Total cost of sales $ 26,606,238 $ 19,157,341
Royalty expense to shareholder    
Cost of sales:    
Total cost of sales $ 2,568,191 $ 2,921,597