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

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4531-111522