Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Cash flows from operations:
Net income (loss) from continuing operations	$ (426,657)	$ 920,929
Net income (loss) on discontinued operations	(97,895)	(346,084)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Stock based compensation	187,794	227,255
Decrease in obsolete inventory reserves	(154,525)	(143,165)
Gain on disposal of property, plant, and equipment	(800)	(92,495)
Depreciation and amortization expense	663,828	599,181
Increase in allowance for expected credit losses - accounts receivable	24,509	8
Deferred income taxes	(145,112)	144,454
Changes in assets and liabilities:
Accounts receivable	464,505	(1,989,230)
Inventories	494,822	(1,076,784)
Other assets	(193,993)	(14,687)
Accounts payable	(1,386,227)	367,912
Contracts in progress, net	2,433,887	480,643
Customer deposits	(253,117)	(405,076)
Income taxes payable	0	1,500
Accrued expenses	(294,171)	(19,633)
Net cash provided by (used in) operating activities - continuing operations	1,506,107	(999,188)
Net cash provided by (used in) operating activities - discontinued operations	(76,123)	480,541
Net cash provided by (used in) operating activities	1,429,984	(518,647)
Cash flows from investing activities:
Purchases of property, plant, and equipment	(614,367)	(569,445)
Net proceeds from sale of assets	800	286,815
Net cash used in investing activities - continuing operations	(613,567)	(282,630)
Net cash provided by investing activities - discontinued operations	0	80,595
Net cash used in investing activities	(613,567)	(202,035)
Cash flows from financing activities:
Net change in line of credit	(546,083)	610,059
Proceeds from finance lease obligations	0	397,536
Principal payments on finance lease obligations	(148,129)	(127,888)
Repayment of term debt	(81,211)	(73,019)
Repurchases of common stock	(37,654)	(63,995)
Net cash provided by (used in) financing activities - continuing operations	(813,077)	742,693
Net cash used in financing activities - discontinued operations	(2,235)	(22,849)
Net cash provided by (used in) financing activities	(815,312)	719,844
Net increase (decrease) in cash	1,105	(838)
Cash at beginning of period	4,014	5,055
Cash at end of period	5,119	4,217
Supplemental disclosures of cash flow information:
Interest	476,809	434,799
Income taxes	90	2,841
Right-of-use (ROU) assets acquired (included in other assets)	38,192	134,543
Amortization of operating lease ROU assets (included in other assets)	6,451	7,001
Computer Software, Intangible Asset [Member]
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Amortization of cloud computing implementation costs	$ 91,364	$ 0