Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Aug. 31, 2025	Aug. 31, 2024
Cash flows from operations:
Net income (loss) from continuing operations	$ 1,680,423	$ (426,657)
Net income (loss) on discontinued operations	0	(97,895)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Stock based compensation	141,105	187,794
Decrease in obsolete inventory reserves	(36,233)	(154,525)
Gain on disposal of property, plant, and equipment	(9,100)	(800)
Depreciation and amortization expense	593,954	663,828
Increase (decrease) in allowance for expected credit losses - accounts receivable	(63,947)	24,509
Deferred income taxes	446,030	(145,112)
Changes in assets and liabilities:
Accounts receivable	412,859	464,505
Inventories	(873,796)	494,822
Other assets	(106,853)	(193,993)
Accounts payable	231,451	(1,386,227)
Contracts in progress, net	(2,022,780)	2,433,887
Customer deposits	(107,832)	(253,117)
Income taxes payable	(500)	0
Accrued expenses	(360,682)	(294,171)
Net cash provided by (used in) operating activities - continuing operations	(14,992)	1,506,107
Net cash used in operating activities - discontinued operations	0	(76,123)
Net cash provided by (used in) operating activities	(14,992)	1,429,984
Cash flows from investing activities:
Purchases of property, plant, and equipment	(474,770)	(614,367)
Net proceeds from sale of assets	9,100	800
Net cash used in investing activities - continuing operations	(465,670)	(613,567)
Net cash provided by (used in) investing activities - discontinued operations		0
Net cash used in investing activities	(465,670)	(613,567)
Cash flows from financing activities:
Net change in line of credit	744,000	(546,083)
Principal payments on finance lease obligations	(168,989)	(148,129)
Repayment of term debt	(88,707)	(81,211)
Repurchases of common stock	(1,542)	(37,654)
Net cash provided by (used in) financing activities - continuing operations	484,762	(813,077)
Net cash used in financing activities - discontinued operations	0	(2,235)
Net cash used in financing activities	484,762	(815,312)
Net increase in cash	4,100	1,105
Cash at beginning of period	1,860	4,014
Cash at end of period	5,960	5,119
Supplemental disclosures of cash flow information:
Interest	259,022	476,809
Income taxes	829	90
Right-of-use (ROU) assets acquired (included in other assets)	97,120	38,192
Amortization of operating lease ROU assets (included in other assets)	13,774	6,451
Computer Software, Intangible Asset [Member]
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Amortization of cloud computing implementation costs	$ 60,909	$ 91,364