Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2020		Jun. 30, 2019
OPERATING ACTIVITIES
Net income	$ 2,411,865		$ 3,607,419
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	129,620		134,733
Stock-based compensation	2,707
Deferred income taxes	(50,405)		(664)
Changes in operating assets and liabilities:
Accounts receivable	396,168		248,955
Inventories	(59,288)		45,093
Prepaid expenses and other assets	(30,703)		205,399
Accounts payable and other liabilities	372,463		296,693
Net cash provided by operating activities	3,172,427		4,537,628
INVESTING ACTIVITIES
Purchases of fixed assets			(16,100)
Purchases of marketable securities			(3,013,530)
Proceeds from maturities of marketable securities			9,500,000
Cash provided by investing activities			6,470,370
FINANCING ACTIVITIES
Payment of dividends to shareholders	(4,835,038)		(4,846,010)
Cash used in financing activities	(4,835,038)		(4,846,010)
(Decrease) increase in cash and cash equivalents	(1,662,611)		6,161,988
Cash and cash equivalents at beginning of period	8,065,594	[1]	6,877,304
Cash and cash equivalents at end of period	6,402,983		13,039,292
Supplemental disclosures of cash flow information:
Cash paid during the period for income taxes

[1] The March 31, 2020 Balance Sheet is derived from the audited financial statements contained in our Annual Report on Form 10-K for the fiscal year ended March 31, 2020.