Quarterly report pursuant to Section 13 or 15(d)

Segment Analysis - Schedule of Segment Reporting Information (Details)

Segment Analysis - Schedule of Segment Reporting Information (Details) - USD ($)	3 Months Ended						9 Months Ended
	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2019	Jul. 31, 2018	Apr. 30, 2018	Jan. 31, 2018	Jul. 31, 2019	Jul. 31, 2018	Oct. 31, 2018
Revenues from External Customers	$ 6,668,498			$ 5,778,473			$ 19,210,278	$ 12,355,426
Cost of Revenues	2,120,680			1,584,200			6,404,726	3,471,165
Gross Profit	4,547,818			4,194,273			12,805,552	8,884,261
Research & Development	631,690			530,392			1,948,243	1,841,408
Selling, General & Administrative	1,775,909			1,640,842			5,091,866	5,172,229
Total Operating Expenses	2,407,599			2,171,234			7,040,109	7,013,637
Income (Loss) from Operations	2,140,219			2,023,039			5,765,443	1,870,624
Other Income	6,398			3,972			65,467	94,642
Interest Expense	(20,275)			(29,421)			(69,683)	(212,910)
Total Other Income (Expense)	(13,877)			(25,449)			(4,216)	(118,268)
Net Income (Loss) before Income Taxes	2,126,342			1,997,590			5,761,227	1,752,356
Current Tax Benefit (Expense)	(38)			20			77,954	(10)
Deferred Tax (Expense)	(350,617)						(850,987)
Total Income Tax (Expense)	(350,655)			20			(773,033)	(10)
Net Income (Loss)	1,775,687	$ 1,973,494	$ 1,239,013	1,997,610	$ (77,325)	$ (167,939)	4,988,194	1,752,346
Total Assets	33,343,909			25,948,616			33,343,909	25,948,616	$ 28,736,611
Total Liabilities	4,428,196			4,416,803			4,428,196	4,416,803	$ 4,349,661
Revenues from Intercompany Sales - eliminated from sales above	886,857			902,980			3,374,253	3,052,455
Depreciation and Amortization	200,194			209,589			594,606	605,645
(Sales) Purchases of Long-lived Assets	(221,822)			257,120			1,843,589	442,041
Marine Technology Business (Products) [Member]
Revenues from External Customers	3,231,510			3,926,491			9,481,229	8,142,724
Cost of Revenues	592,585			650,669			1,798,800	1,298,022
Gross Profit	2,638,925			3,275,822			7,682,429	6,844,702
Research & Development	503,540			440,202			1,533,544	1,385,994
Selling, General & Administrative	590,981			723,155			2,089,442	2,150,168
Total Operating Expenses	1,094,521			1,163,357			3,622,986	3,536,162
Income (Loss) from Operations	1,544,404			2,112,465			4,059,443	3,308,540
Other Income	6,398			3,941			65,467	92,514
Interest Expense	(2,197)			(2,480)			(8,063)	(9,289)
Total Other Income (Expense)	4,201			1,461			57,404	83,225
Net Income (Loss) before Income Taxes	1,548,605			2,113,926			4,116,847	3,391,765
Current Tax Benefit (Expense)	(5,172)						20,496	(6,596)
Deferred Tax (Expense)	(47,768)						(199,073)
Total Income Tax (Expense)	(52,940)						(178,577)
Net Income (Loss)	1,495,665			2,113,926			3,938,270	3,385,169
Total Assets	18,200,970			14,016,131			18,200,970	14,016,131
Total Liabilities	2,169,195			865,138			2,169,195	865,138
Revenues from Intercompany Sales - eliminated from sales above	136,128			44,180			1,044,595	831,352
Depreciation and Amortization	132,392			137,426			391,516	374,076
(Sales) Purchases of Long-lived Assets	(262,062)			232,575			1,803,206	486,604
Marine Engineering Business (Services) [Member]
Revenues from External Customers	3,436,988			1,851,982			9,729,049	4,212,702
Cost of Revenues	1,528,095			933,531			4,605,926	2,173,143
Gross Profit	1,908,893			918,451			5,123,123	2,039,559
Research & Development	32,991			90,190			130,205	455,414
Selling, General & Administrative	659,398			566,692			1,864,503	1,813,357
Total Operating Expenses	692,389			656,882			1,994,708	2,268,771
Income (Loss) from Operations	1,216,504			261,569			3,128,415	(229,212)
Other Income				31				2,128
Interest Expense	(2,150)			(15,802)			(11,849)	(45,503)
Total Other Income (Expense)	(2,150)			(15,771)			(11,849)	(43,375)
Net Income (Loss) before Income Taxes	1,214,354			245,798			3,116,566	(272,587)
Current Tax Benefit (Expense)	4,460						39,445
Deferred Tax (Expense)	(214,144)						(447,540)
Total Income Tax (Expense)	(209,684)						(408,095)
Net Income (Loss)	1,004,670			245,798			2,708,471	(272,587)
Total Assets	13,876,685			11,378,558			13,876,685	11,378,558
Total Liabilities	870,492			1,660,291			870,492	1,660,291
Revenues from Intercompany Sales - eliminated from sales above	75,729			183,800			304,658	196,103
Depreciation and Amortization	63,724			66,435			191,402	218,649
(Sales) Purchases of Long-lived Assets	5,937			(6,122)			40,383	43,839
Overhead [Member]
Revenues from External Customers
Cost of Revenues
Gross Profit
Research & Development	95,159						284,494
Selling, General & Administrative	525,530			350,995			1,137,921	1,208,704
Total Operating Expenses	620,689			350,995			1,422,415	1,208,704
Income (Loss) from Operations	(620,689)			(350,995)			(1,422,415)	(1,208,704)
Other Income
Interest Expense	(15,928)			(11,139)			(49,771)	(158,118)
Total Other Income (Expense)	(15,928)			(11,139)			(49,771)	(158,118)
Net Income (Loss) before Income Taxes	(636,617)			(362,134)			(1,472,186)	(1,366,822)
Current Tax Benefit (Expense)	674			20			18,013	6,586
Deferred Tax (Expense)	(88,705)						(204,374)
Total Income Tax (Expense)	(88,031)						(186,361)
Net Income (Loss)	(724,648)			(362,114)			(1,658,547)	(1,360,236)
Total Assets	1,266,254			553,927			1,266,254	553,927
Total Liabilities	1,388,509			1,891,374			1,388,509	1,891,374
Revenues from Intercompany Sales - eliminated from sales above	675,000			675,000			2,025,000	2,025,000
Depreciation and Amortization	4,078			5,728			11,688	12,920
(Sales) Purchases of Long-lived Assets	$ 34,303			$ 30,667			$ 34,303	$ 55,452