Condensed Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Net Cash Provided by Operating Activities	$ 692,487	$ 845,649
Cash Provided by/(Applied to) Investing Activities:
Maturity of Available-for-Sale Debt Securities	2,473,604
Purchase of Available-for-Sale Debt Securities	(5,926,812)
Purchase of Property, Plant and Equipment	(570,260)	(818,594)
Other Investments	(1,867)	(48,731)
Net Cash Applied to Investing Activities	(4,025,335)	(867,325)
Cash Applied to Financing Activities:
Dividends Paid to Stockholders	(24,437)	(50,222)
Purchase of Treasury Stock	(45,591)	(12,954)
Total Cash Applied to Financing Activities	(70,028)	(63,176)
Net Change in Cash and Cash Equivalents	(3,402,876)	(84,852)
Cash and Cash Equivalents, Beginning of Period	6,428,499	4,767,810
Cash and Cash Equivalents, End of Period	$ 3,025,623	$ 4,682,958

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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