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BALANCE SHEETS (September 30, 2025 Unaudited) - USD ($)
Dec. 31, 2025
Mar. 31, 2025
Current assets    
Cash and cash equivalents $ 3,408,531 $ 8,036,564
Marketable securities, short-term (amortized cost of $17,137,942 as of December 31, 2025, and $13,730,266 as of March 31, 2025) 17,156,488 13,691,593
Accounts receivable, net of allowance for credit losses of $15,000 2,483,045 3,589,268
Inventories, net 7,271,798 7,449,083
Prepaid expenses and other assets 756,715 433,414
Total current assets 31,076,577 33,199,922
Fixed assets    
Machinery and equipment 13,834,355 11,758,205
Leasehold improvements 2,059,853 1,956,309
Less accumulated depreciation and amortization 11,996,423 11,727,615
Fixed assets, net 3,897,785 1,986,899
Deferred tax assets 722,602 1,867,069
Marketable securities, long-term (amortized cost of $23,310,800 as of December 31, 2025, and $26,353,692 as of March 31, 2025) 23,441,471 26,304,623
Right-of-use asset - operating lease 824,631 917,349
Total assets 59,963,066 64,275,862
Long-Lived Assets 15,894,208 13,714,514
Current liabilities    
Accounts payable 226,856 214,691
Accrued payroll and other 504,710 871,169
Operating lease 160,413 83,010
Total current liabilities 891,979 1,168,870
Long-term operating lease liability 773,996 838,221
Total liabilities 1,665,975 2,007,091
Shareholders' equity    
Common Stock, Value 48,372 48,372
Additional paid-in capital 19,904,513 19,821,106
Accumulated other comprehensive income (loss) 116,569 (68,544)
Retained earnings 38,227,637 42,467,837
Total shareholders' equity 58,297,091 62,268,771
Total liabilities and shareholders' equity $ 59,963,066 $ 64,275,862