| Income Statement (Quarterly) | 2025-09-30 | 2025-06-30 | 2025-03-31 | 2024-12-31 | 
|---|---|---|---|---|
| Revenue | 6,346,992 | 6,104,644 | 7,269,715 | 5,063,045 | 
| Cost of Revenue | 1,378,494 | 1,182,523 | 1,515,410 | 797,622 | 
| Gross Profit | 4,968,498 | 4,922,121 | 5,754,305 | 4,265,423 | 
| Operating Expenses | ||||
| R&D Expenses | 0 | 0 | 0 | 0 | 
| SG&A Expenses | 436,919 | 418,640 | 465,818 | 434,783 | 
| Operating Expenses | 1,310,389 | 1,138,871 | 784,211 | 1,304,460 | 
| Operating Income | 3,658,109 | 3,783,250 | 4,248,776 | 2,960,963 | 
| Interest Expense | 0 | 0 | 0 | 0 | 
| Income Before Tax | 4,145,533 | 4,282,269 | 4,725,739 | 3,570,200 | 
| Income Tax Expense | 834,695 | 706,451 | 833,365 | 521,790 | 
| Net Income | 3,310,838 | 3,575,818 | 3,892,374 | 3,048,410 | 
| Per Share | ||||
| EPS | 0.68 | 0.74 | 3.12 | 0.63 | 
| EPS Diluted | 0.00 | 0.00 | 0.00 | 0.00 | 
| Income Statement (Annual) | 2025-03-31 | 2024-03-31 | 2023-03-31 | 2022-03-31 | 2021-03-31 | 
|---|---|---|---|---|---|
| Revenue | 25,874,694 | 29,804,179 | 38,253,592 | 26,986,970 | 21,366,246 | 
| Cost of Revenue | 4,235,780 | 6,772,533 | 8,062,311 | 6,263,090 | 4,121,461 | 
| Gross Profit | 21,638,914 | 23,031,646 | 30,191,281 | 20,723,880 | 17,244,785 | 
| Operating Expenses | |||||
| R&D Expenses | 0 | 0 | 0 | 0 | 0 | 
| SG&A Expenses | 2,009,246 | 1,781,347 | 1,963,105 | 1,469,321 | 1,316,427 | 
| Operating Expenses | 5,644,765 | 4,512,781 | 4,547,099 | 4,395,195 | 4,501,181 | 
| Operating Income | 15,994,149 | 18,518,865 | 25,644,182 | 16,328,685 | 12,743,604 | 
| Interest Expense | 0 | 0 | 0 | 1,171,128 | 0 | 
| Income Before Tax | 18,038,737 | 20,467,585 | 27,092,837 | 17,499,813 | 14,241,752 | 
| Income Tax Expense | 2,974,221 | 3,342,886 | 4,398,379 | 2,992,312 | 2,547,368 | 
| Net Income | 15,064,516 | 17,124,699 | 22,694,458 | 14,507,501 | 11,694,384 | 
| Per Share | |||||
| EPS | 3.12 | 3.54 | 4.70 | 3.00 | 2.42 | 
| EPS Diluted | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Balance Sheet (Quarterly) | 2025-03-31 | 2024-03-31 | 2023-03-31 | 2022-03-31 | 
|---|---|---|---|---|
| Assets | ||||
| Cash and Cash Equivalents | 8,036,564 | 10,283,550 | 1,669,896 | 10,449,510 | 
| Short Term Investments | 13,691,593 | 11,917,779 | 15,513,095 | 20,839,683 | 
| Net Receivables | 3,589,268 | 3,144,833 | 6,523,344 | 4,704,829 | 
| Inventory | 7,449,083 | 7,158,585 | 6,417,010 | 5,088,635 | 
| Total Current Assets | 33,199,922 | 33,194,096 | 30,786,804 | 41,503,177 | 
| Property Plant Equipment | 2,904,248 | 1,343,932 | 1,771,281 | 1,166,635 | 
| Goodwill and Intangibles | 0 | 0 | 0 | 0 | 
| Total Assets | 64,275,862 | 66,780,033 | 69,255,170 | 67,467,492 | 
| Liabilities | ||||
| Account Payables | 214,691 | 127,153 | 281,712 | 943,535 | 
| Short Term Debt | 83,010 | 358,744 | 175,798 | 156,121 | 
| Total Current Liabilities | 1,168,870 | 1,035,741 | 1,832,760 | 2,456,345 | 
| Long Term Debt | 838,221 | 175,775 | 342,908 | 446,018 | 
| Total Liabilities | 2,007,091 | 1,211,516 | 2,175,668 | 2,902,363 | 
| Shareholders Equity | ||||
| Retained Earnings | 42,467,837 | 46,743,005 | 48,949,610 | 45,578,456 | 
| Total Shareholders Equity | 62,268,771 | 65,568,517 | 67,079,502 | 64,565,129 | 
| Balance Sheet (Annual) | 2025-03-31 | 2024-03-31 | 2023-03-31 | 2022-03-31 | 2021-03-31 | 
|---|---|---|---|---|---|
| Assets | |||||
| Cash and Cash Equivalents | 8,036,564 | 10,283,550 | 1,669,896 | 10,449,510 | 10,427,340 | 
| Short Term Investments | 13,691,593 | 11,917,779 | 15,513,095 | 20,839,683 | 7,678,957 | 
| Net Receivables | 3,589,268 | 3,144,833 | 6,523,344 | 4,704,829 | 1,964,281 | 
| Inventory | 7,449,083 | 7,158,585 | 6,417,010 | 5,088,635 | 3,900,777 | 
| Total Current Assets | 33,199,922 | 33,194,096 | 30,786,804 | 41,503,177 | 24,362,633 | 
| Property Plant Equipment | 2,904,248 | 1,343,932 | 1,771,281 | 1,166,635 | 1,025,899 | 
| Goodwill and Intangibles | 0 | 0 | 0 | 0 | 0 | 
| Total Assets | 64,275,862 | 66,780,033 | 69,255,170 | 67,467,492 | 72,500,739 | 
| Liabilities | |||||
| Account Payables | 214,691 | 127,153 | 281,712 | 943,535 | 336,591 | 
| Short Term Debt | 83,010 | 358,744 | 175,798 | 156,121 | 150,273 | 
| Total Current Liabilities | 1,168,870 | 1,035,741 | 1,832,760 | 2,456,345 | 1,027,338 | 
| Long Term Debt | 838,221 | 175,775 | 342,908 | 446,018 | 581,459 | 
| Total Liabilities | 2,007,091 | 1,211,516 | 2,175,668 | 2,902,363 | 1,608,797 | 
| Shareholders Equity | |||||
| Retained Earnings | 42,467,837 | 46,743,005 | 48,949,610 | 45,578,456 | 50,404,364 | 
| Total Shareholders Equity | 62,268,771 | 65,568,517 | 67,079,502 | 64,565,129 | 70,891,942 | 
| Cash Flow Statement (Quarterly) | 2025-03-31 | 2024-03-31 | 2023-03-31 | 2022-03-31 | 
|---|---|---|---|---|
| Operating Activities | ||||
| Net Income | 15,064,516 | 17,124,699 | 22,694,458 | 14,507,501 | 
| Depreciation & Amortization | 324,232 | 308,147 | 257,606 | 424,981 | 
| Stock Based Compensation | 152,167 | 141,936 | 59,657 | 81,855 | 
| Change in Working Capital | -249,507 | 1,773,313 | -4,082,117 | -2,535,115 | 
| Operating Cash Flow | 14,310,418 | 18,247,411 | 19,091,498 | 12,503,679 | 
| Investing Activities | ||||
| Capital Expenditure | -1,257,109 | -16,731 | -935,791 | -484,579 | 
| Investments | -1,257,109 | -16,731 | -935,791 | -484,579 | 
| Investing Cash Flow | 2,668,118 | 9,580,084 | -8,527,108 | 7,015,421 | 
| Financing Activities | ||||
| Debt Repayment | 0 | 0 | 0 | 0 | 
| Common Stock Issued/Repurchased | 114,162 | 117,463 | -20,700 | -163,521 | 
| Dividends Paid | -19,339,684 | -19,331,304 | -19,323,304 | -19,333,409 | 
| Financing Cash Flow | -19,225,522 | -19,213,841 | -19,344,004 | -19,496,930 | 
| Summary | ||||
| Free Cash Flow | 13,053,309 | 18,230,680 | 18,155,707 | 12,019,100 | 
| Net Change in Cash | -2,246,986 | 8,613,654 | -8,779,614 | 22,170 | 
| Cash Flow Statement (Annual) | 2025-03-31 | 2024-03-31 | 2023-03-31 | 2022-03-31 | 2021-03-31 | 
|---|---|---|---|---|---|
| Operating Activities | |||||
| Net Income | 15,064,516 | 17,124,699 | 22,694,458 | 14,507,501 | 11,694,384 | 
| Depreciation & Amortization | 324,232 | 308,147 | 257,606 | 424,981 | 542,926 | 
| Stock Based Compensation | 152,167 | 141,936 | 59,657 | 81,855 | 45,572 | 
| Change in Working Capital | -249,507 | 1,773,313 | -4,082,117 | -2,535,115 | 1,211,105 | 
| Operating Cash Flow | 14,310,418 | 18,247,411 | 19,091,498 | 12,503,679 | 13,364,832 | 
| Investing Activities | |||||
| Capital Expenditure | -1,257,109 | -16,731 | -935,791 | -484,579 | -62,727 | 
| Investments | -1,257,109 | -16,731 | -935,791 | -484,579 | -62,727 | 
| Investing Cash Flow | 2,668,118 | 9,580,084 | -8,527,108 | 7,015,421 | 8,424,873 | 
| Financing Activities | |||||
| Debt Repayment | 0 | 0 | 0 | 0 | 0 | 
| Common Stock Issued/Repurchased | 114,162 | 117,463 | -20,700 | -163,521 | -91,419 | 
| Dividends Paid | -19,339,684 | -19,331,304 | -19,323,304 | -19,333,409 | -19,336,540 | 
| Financing Cash Flow | -19,225,522 | -19,213,841 | -19,344,004 | -19,496,930 | -19,427,959 | 
| Summary | |||||
| Free Cash Flow | 13,053,309 | 18,230,680 | 18,155,707 | 12,019,100 | 13,302,105 | 
| Net Change in Cash | -2,246,986 | 8,613,654 | -8,779,614 | 22,170 | 2,361,746 |