STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
OPERATING ACTIVITIES
Net income	$ 3,575,818	$ 4,097,587
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	85,399	75,594
Bonds discount amortization	(96,506)	(53,219)
Stock-based compensation	6,838	18,442
Deferred income taxes	(3,040)	(147,844)
Non-cash operating lease credit	1,965	(7,587)
Changes in operating assets and liabilities
Accounts receivable	1,335,447	1,044,815
Inventories	(4,286)	(6,047)
Prepaid expenses and other assets	(196,757)	173,966
Accounts payable	(37,477)	47,089
Accrued payroll and other	523,259	609,596
Net cash provided by operating activities	5,190,660	5,852,392
INVESTING ACTIVITIES
Purchases of fixed assets	(1,058,524)	(916,634)
Purchases of marketable securities	(10,108,982)	(6,580,140)
Proceeds from maturities of marketable securities	6,000,000	2,200,000
Net cash used in investing activities	(5,167,506)	(5,296,774)
FINANCING ACTIVITIES
Payment of dividends to shareholders	(4,837,166)	(4,833,676)
Net cash used in financing activities	(4,837,166)	(4,833,676)
Decrease in cash and cash equivalents	(4,814,012)	(4,278,058)
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation, Beginning Balance	8,036,564	10,283,550
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation, Ending Balance	3,222,552	6,005,492
Supplemental disclosures of cash flow information
Cash paid during the period for income taxes	$ 0	$ 0