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BALANCE SHEETS - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 17,566,682 | $ 5,934,749
Accounts receivable, net of allowance for doubtful accounts of $205,822 and $146,832 | 32,910,919 | 6,564,371
Investments in debt and equity securities, at fair value | 8,081,833 | 7,771,660
Inventories, net | 10,234,646 | 7,450,592
Income taxes receivable |  | 50,392
Other current assets | 684,317 | 635,201
Total current assets | 69,478,397 | 28,406,965
Property, plant, and equipment, net | 30,816,504 | 10,632,057
Income taxes receivable |  | 50,393
Deferred tax asset | 4,631,206 |
Other assets | 44,567 | 88,315
Total assets | 104,970,674 | 39,177,730
Current liabilities: |  |
Accounts payable | 16,256,444 | 5,007,604
Current portion of long-term debt | 1,030,763 | 260,939
Accrued compensation | 826,762 | 607,339
Dividends payable | 49,091 | 54,800
Accrued royalties to shareholder | 1,973,781 | 921,445
Other accrued liabilities | 3,398,904 | 1,387,149
Income taxes payable | 4,365,770 | 17,944
Total current liabilities | 27,901,515 | 8,257,220
Other long-term liabilities | 24,478,697 |
Long-term debt, net of current maturities | 2,710,337 | 2,378,055
Total liabilities | 55,090,549 | 10,635,275
Commitments and contingencies - See Note 10 |  |
Preferred stock, $1 par value: |  |
Common Stock, no par value; authorized: 100,000,000 shares; outstanding: 33,956,204 and 32,674,954 shares at December 31, 2020 and 2019 |  |
Additional paid-in capital | 59,285,401 | 61,660,744
Accumulated deficit | (9,668,221) | (33,891,234)
Total stockholders' equity | 49,880,125 | 28,542,455
Total liabilities and stockholders' equity | 104,970,674 | 39,177,730
Series I, Class B |  |
Preferred stock, $1 par value: |  |
Preferred stock |  | 96,000
Series II, Class B |  |
Preferred stock, $1 par value: |  |
Preferred stock | 156,200 | 171,200
Series III Preferred Stock |  |
Preferred stock, $1 par value: |  |
Preferred stock | $ 106,745 | 129,245
Series IV Preferred Stock |  |
Preferred stock, $1 par value: |  |
Preferred stock |  | 342,500
Series V Preferred Stock |  |
Preferred stock, $1 par value: |  |
Preferred stock |  | $ 34,000

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