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BALANCE SHEETS - USD ($) | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 9,647,292 | $ 14,877,899
Accounts receivable, net of allowance for doubtful accounts of $149,665 and $101,872, respectively | 4,912,356 | 5,105,556
Held-to-maturity securities, at amortized cost | 996,233 |
Inventories, net | 7,545,094 | 6,206,161
Income taxes receivable | 100,887 |
Other current assets | 644,803 | 418,154
Total current assets | 23,846,665 | 26,607,770
Property, plant, and equipment, net | 10,851,747 | 11,353,202
Held-to-maturity securities, at amortized cost (non-current) | 1,989,923 |
Income taxes receivable | 100,835 | 188,456
Other assets | 2,849 | 6,052
Total assets | 36,792,019 | 38,155,480
Current liabilities: |  |
Accounts payable | 5,369,677 | 4,957,750
Current portion of long-term debt | 406,361 | 410,949
Accrued compensation | 540,852 | 547,021
Dividends payable | 55,113 | 55,113
Accrued royalties to shareholder | 769,324 | 793,489
Insurance proceeds |  | 466,293
Other accrued liabilities | 1,387,287 | 657,923
Income taxes payable | 10,025 | 11,407
Total current liabilities | 8,538,639 | 7,899,945
Long-term debt, net of current maturities | 2,639,647 | 3,081,409
Total liabilities | 11,178,286 | 10,981,354
Commitments and contingencies - See Note 9 |  |
Preferred stock, $1 par value: |  |
Common Stock, no par value; authorized: 100,000,000 shares; outstanding: 32,666,454 |  |
Additional paid-in capital | 61,871,756 | 62,092,206
Accumulated deficit | (37,039,468) | (35,699,525)
Total stockholders' equity | 25,613,733 | 27,174,126
Total liabilities and stockholders' equity | 36,792,019 | 38,155,480
Series I, Class B |  |
Preferred stock, $1 par value: |  |
Preferred stock | 98,500 | 98,500
Series II, Class B |  |
Preferred stock, $1 par value: |  |
Preferred stock | 171,200 | 171,200
Series III, Class B |  |
Preferred stock, $1 par value: |  |
Preferred stock | 129,245 | 129,245
Series IV, Class B |  |
Preferred stock, $1 par value: |  |
Preferred stock | 342,500 | 342,500
Series V, Class B |  |
Preferred stock, $1 par value: |  |
Preferred stock | $ 40,000 | $ 40,000

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