STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
OPERATING ACTIVITIES
Net income	$ 14,461,814	$ 10,691,481
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	187,781	358,828
Stock-based compensation	54,218	73,036
Deferred income taxes	(61,972)	319
Changes in operating assets and liabilities
Accounts receivable	2,607,555	(1,073,922)
Inventories	(1,370,592)	(466,898)
Prepaid expenses and other assets	(502,423)	(435,067)
Accounts payable and accrued expenses	(627,470)	(49,447)
Net cash provided by operating activities	14,748,911	9,098,330
INVESTING ACTIVITIES
Purchases of fixed assets	(907,612)	(58,317)
Purchases of marketable securities	(26,618,617)	0
Proceeds from maturities of marketable securities	18,750,000	4,000,000
Receipt of tenant improvement allowance	100,000	0
Net cash provided (used) by investing activities	(8,676,229)	3,941,683
FINANCING ACTIVITIES
Payment of dividends to shareholders	(14,492,478)	(14,499,696)
Cash used in financing activities	(14,492,478)	(14,499,696)
Decrease in cash and cash equivalents	(8,419,796)	(1,459,683)
Cash and cash equivalents	10,449,510	10,427,340
Cash and cash equivalents	2,029,714	8,967,657
Supplemental disclosures of cash flow information
Cash paid during the period for income taxes	$ 4,130,278	$ 2,490,000