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CONDENSED STATEMENTS OF CASH FLOWS - USD ($)
 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Cash flows from operating activities    
Net income $ 35,139,894 $ 12,714,637
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 702,384 624,998
Net unrealized gain on investments (816,150) (559,543)
Realized gains on investments   (162,595)
Accreted interest 83,282  
Deferred taxes (8,514,068) (804,357)
Provision for doubtful accounts 146,395 125,000
Share-based compensation 2,503,152  
Gain on forgiveness of PPP loan (1,377,652)  
(Increase) decrease in operating assets:    
Accounts receivable (9,055,116) (7,542,375)
Inventories (8,462,118) (301,951)
Other current assets (83,512) (18,053)
Other assets 38,892 10,125
Increase (decrease) in operating liabilities:    
Accounts payable 8,154,409 2,272,302
Accrued liabilities 1,490,008 1,803,433
Income taxes payable (1,820,078) 670,531
Net cash provided by operating activities 18,129,722 8,832,152
Cash flows from investing activities    
Purchase of property, plant, and equipment (46,511,859) (9,478,182)
Purchase of debt and equity securities (4,685,960) (2,174,980)
Proceeds from the sales of debt and equity securities   3,965,329
Net cash used by investing activities (51,197,819) (7,687,833)
Cash flows from financing activities    
Repayments of long-term debt (206,310) (194,985)
Proceeds of long-term debt   1,363,000
Proceeds from Technology Investment Agreement (TIA) 39,848,368 6,883,103
Proceeds from the exercise of stock options 48,600 851,012
Payment of preferred stock redemption price payable (101,250)  
Payment of preferred stock repurchase payable (1,101,110) (100,000)
Payment of preferred stock dividends (3,784,394) (164,400)
Repurchase of common stock (2,839,326)  
Net cash provided by financing activities 31,864,578 8,637,730
Net increase (decrease) in cash and cash equivalents (1,203,519) 9,782,049
Cash and cash equivalents at:    
Beginning of period 17,566,682 5,934,749
End of period 16,363,163 15,716,798
Supplemental schedule of cash flow information:    
Interest paid 89,386 105,959
Income taxes paid 21,068,540  
Supplemental schedule of noncash investing and financing activities:    
Preferred dividends declared, not paid 1,399,744 52,242
Conversion of preferred stock to common stock 26,500 15,000
Amounts receivable under Technology Investment Agreement $ (3,014,325)  
Preferred stock repurchase payable   $ 2,723,248