v3.26.3
SCHEDULE OF SEGMENT REPORTING INFORMATION (Details) - USD ($)
 3 Months Ended 9 Months Ended
Jul. 31, 2026
Apr. 30, 2026
Jan. 31, 2026
Jul. 31, 2025
Apr. 30, 2025
Jan. 31, 2025
Jul. 31, 2026
Jul. 31, 2025
Segment Reporting [Line Items]                
Net Revenues $ 7,717,469     $ 7,064,795     $ 21,331,593 $ 19,291,969
Cost of Revenues 2,667,175     2,241,039     7,336,216 6,542,462
Gross Profit 5,050,294     4,823,756     13,995,377 12,749,507
Research & Development 729,216     572,468     1,983,622 1,805,589
Selling, General & Administrative 2,787,803     2,871,309     7,675,434 7,814,233
Total Operating Expenses 3,517,019     3,443,777     9,659,056 9,619,822
INCOME FROM OPERATIONS 1,533,275     1,379,979     4,336,321 3,129,685
Other Income                
Other Income 24,259     8,922     197,453 119,921
Interest Income 233,817     154,848     578,002 494,613
Total Other Income, net 258,076     163,770     775,455 614,534
INCOME BEFORE INCOME TAX EXPENSE 1,791,351     1,543,749     5,111,776 3,744,219
Income Tax (Expense) Benefit                
Current Tax (Expense) (408,583)     (268,786)     (1,104,002) (692,361)
Deferred Tax Benefit 6,844     8,022     10,371 52,864
Total Income Tax (Expense) (401,739)     (260,764)     (1,093,631) (639,497)
NET INCOME 1,389,612 $ 1,697,810 $ 930,723 1,282,985 $ 908,762 $ 912,975 4,018,145 3,104,722
Supplemental Disclosures                
Total Assets 68,853,366           68,853,366  
Total Liabilities 6,122,554           6,122,554  
Depreciation and Amortization             646,311 642,801
Segment Reporting [Member]                
Segment Reporting [Line Items]                
Net Revenues 7,717,469     7,064,795     21,331,593 19,291,969
Cost of Revenues 2,667,175     2,241,039     7,336,216 6,542,462
Gross Profit 5,050,294     4,823,756     13,995,377 12,749,507
Research & Development 729,216     572,468     1,983,622 1,805,589
Selling, General & Administrative 2,787,803     2,871,309     7,675,434 7,814,233
Total Operating Expenses 3,517,019     3,443,777     9,659,056 9,619,822
INCOME FROM OPERATIONS 1,533,275     1,379,979     4,336,321 3,129,685
Other Income                
Other Income 24,259     8,922     197,453 119,921
Interest Income 233,817     154,848     578,002 494,613
Total Other Income, net 258,076     163,770     775,455 614,534
INCOME BEFORE INCOME TAX EXPENSE 1,791,351     1,543,749     5,111,776 3,744,219
Income Tax (Expense) Benefit                
Current Tax (Expense) (408,583)     (268,786)     (1,104,002) (692,361)
Deferred Tax Benefit 6,844     8,022     10,371 52,864
Total Income Tax (Expense) (401,739)     (260,764)     (1,093,631) (639,497)
NET INCOME 1,389,612     1,282,985     4,018,145 3,104,722
Supplemental Disclosures                
Total Assets 68,853,366     61,913,058     68,853,366 61,913,058
Total Liabilities 6,122,554     4,641,312     6,122,554 4,641,312
Revenues from Intercompany Sales - eliminated from sales above 1,841,973     3,866,031     5,003,611 7,714,730
Depreciation and Amortization 376,191     368,295     1,091,753 1,037,367
Purchases of Long-lived Assets 162,215     240,347     365,727 392,666
Marine Technology Products Business [Member]                
Segment Reporting [Line Items]                
Net Revenues 3,377,472     3,984,475     9,572,067 10,138,374
Marine Technology Products Business [Member] | Segment Reporting [Member]                
Segment Reporting [Line Items]                
Net Revenues 3,377,472     3,984,475     9,572,067 10,138,374
Cost of Revenues 725,321     915,778     2,208,198 2,779,363
Gross Profit 2,652,151     3,068,697     7,363,869 7,359,011
Research & Development 473,749     428,007     1,326,692 1,399,204
Selling, General & Administrative 1,328,538     1,342,856     3,195,464 3,006,078
Total Operating Expenses 1,802,287     1,770,863     4,522,156 4,405,282
INCOME FROM OPERATIONS 849,864     1,297,834     2,841,713 2,953,729
Other Income                
Other Income 2,902     7,027     146,492 17,840
Interest Income 146,761     121,878     405,843 363,549
Total Other Income, net 149,663     128,905     552,335 381,389
INCOME BEFORE INCOME TAX EXPENSE 999,527     1,426,739     3,394,048 3,335,118
Income Tax (Expense) Benefit                
Current Tax (Expense) (74,151)     363     (202,888) (81,169)
Deferred Tax Benefit        
Total Income Tax (Expense) (74,151)     363     (202,888) (81,169)
NET INCOME 925,376     1,427,102     3,191,160 3,253,949
Supplemental Disclosures                
Total Assets 39,788,972     38,121,854     39,788,972 38,121,854
Total Liabilities 2,696,910     2,313,810     2,696,910 2,313,810
Revenues from Intercompany Sales - eliminated from sales above 1,054,648     2,108,899     2,582,528 5,220,773
Depreciation and Amortization 155,755     142,362     439,171 424,179
Purchases of Long-lived Assets 2,261     210,225     95,080 233,519
Acoustic Sensors and Materials Business [Member] | Segment Reporting [Member]                
Segment Reporting [Line Items]                
Net Revenues 1,610,920     1,458,536     4,720,503 4,069,866
Cost of Revenues 766,415     659,377     1,997,792 1,611,158
Gross Profit 844,505     799,159     2,722,711 2,458,708
Research & Development 155,494     98,502     376,070 284,732
Selling, General & Administrative 489,162     451,588     1,411,414 1,298,765
Total Operating Expenses 644,656     550,090     1,787,484 1,583,497
INCOME FROM OPERATIONS 199,849     249,069     935,227 875,211
Other Income                
Other Income 21,357     1,895     50,961 102,081
Interest Income 1,213     1,144     3,350 4,736
Total Other Income, net 22,570     3,039     54,311 106,817
INCOME BEFORE INCOME TAX EXPENSE 222,419     252,108     989,538 982,028
Income Tax (Expense) Benefit                
Current Tax (Expense) (10,017)     (3,160)     (237,999) (170,243)
Deferred Tax Benefit        
Total Income Tax (Expense) (10,017)     (3,160)     (237,999) (170,243)
NET INCOME 212,402     248,948     751,539 811,785
Supplemental Disclosures                
Total Assets 7,695,001     6,838,086     7,695,001 6,838,086
Total Liabilities 1,506,817     1,215,699     1,506,817 1,215,699
Revenues from Intercompany Sales - eliminated from sales above 36     22,914     22,045 45,005
Depreciation and Amortization 186,790     196,344     557,030 525,736
Purchases of Long-lived Assets 13,061     20,072     57,464 134,049
Defense Engineering Services Business [Member]                
Segment Reporting [Line Items]                
Net Revenues 2,729,077     1,621,784     7,039,023 5,083,729
Defense Engineering Services Business [Member] | Segment Reporting [Member]                
Segment Reporting [Line Items]                
Net Revenues 2,729,077     1,621,784     7,039,023 5,083,729
Cost of Revenues 1,175,439     665,884     3,130,226 2,151,941
Gross Profit 1,553,638     955,900     3,908,797 2,931,788
Research & Development 99,973     45,959     280,860 121,653
Selling, General & Administrative 546,630     662,604     1,664,620 1,840,591
Total Operating Expenses 646,603     708,563     1,945,480 1,962,244
INCOME FROM OPERATIONS 907,035     247,337     1,963,317 969,544
Other Income                
Other Income        
Interest Income 69,863     29,998     124,873 83,308
Total Other Income, net 69,863     29,998     124,873 83,308
INCOME BEFORE INCOME TAX EXPENSE 976,898     277,335     2,088,190 1,052,852
Income Tax (Expense) Benefit                
Current Tax (Expense) (27,478)     (46,389)     (206,284) (46,389)
Deferred Tax Benefit        
Total Income Tax (Expense) (27,478)     (46,389)     (206,284) (46,389)
NET INCOME 949,420     230,946     1,881,906 1,006,463
Supplemental Disclosures                
Total Assets 16,849,840     13,485,367     16,849,840 13,485,367
Total Liabilities 1,717,308     744,611     1,717,308 744,611
Revenues from Intercompany Sales - eliminated from sales above 12,289     171,218     74,038 273,952
Depreciation and Amortization 20,965     16,446     57,647 48,973
Purchases of Long-lived Assets 60,532     10,050     83,483 25,098
Corporate Segment [Member] | Segment Reporting [Member]                
Segment Reporting [Line Items]                
Net Revenues        
Cost of Revenues        
Gross Profit        
Research & Development        
Selling, General & Administrative 423,473     414,261     1,403,936 1,668,799
Total Operating Expenses 423,473     414,261     1,403,936 1,668,799
INCOME FROM OPERATIONS (423,473)     (414,261)     (1,403,936) (1,668,799)
Other Income                
Other Income        
Interest Income 15,980     1,828     43,936 43,020
Total Other Income, net 15,980     1,828     43,936 43,020
INCOME BEFORE INCOME TAX EXPENSE (407,493)     (412,433)     (1,360,000) (1,625,779)
Income Tax (Expense) Benefit                
Current Tax (Expense) (296,937)     (219,600)     (456,831) (394,560)
Deferred Tax Benefit 6,844     8,022     10,371 52,864
Total Income Tax (Expense) (290,093)     (211,578)     (446,460) (341,696)
NET INCOME (697,586)     (624,011)     (1,806,460) (1,967,475)
Supplemental Disclosures                
Total Assets 4,519,553     3,467,751     4,519,553 3,467,751
Total Liabilities 201,519     367,192     201,519 367,192
Revenues from Intercompany Sales - eliminated from sales above 775,000     1,563,000     2,325,000 2,175,000
Depreciation and Amortization 12,681     13,143     37,905 38,479
Purchases of Long-lived Assets $ 86,361         $ 129,700