Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	May 31, 2024	May 31, 2023
Cash flows from operations:
Net income (loss) from continuing operations	$ (428,915)	$ 680,056
Net income (loss) on discontinued operations	(69,465)	(31,182)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Stock based compensation	127,596	137,638
Increase (Decrease) in obsolete inventory reserves	231,220	(44,321)
Gain on disposal of property, plant, and equipment	0	(97,616)
Depreciation and amortization expense	434,300	408,066
Increase in allowance for expected credit losses - accounts receivable	17,540	2,095
Deferred income taxes	(134,910)	167,213
Changes in assets and liabilities:
Accounts receivable	767,716	(1,186,102)
Inventories	303,321	(1,057,145)
Other assets	(218,547)	122,264
Accounts payable	(1,237,351)	(311,062)
Contracts in progress, net	1,895,655	583,259
Customer deposits	(246,625)	(268,417)
Income taxes payable	0	1,500
Accrued expenses	(375,425)	(34,323)
Net cash provided by (used in) operating activities - continuing operations	1,196,484	(896,895)
Net cash provided by (used in) operating activities - discontinued operations	(48,862)	273,423
Net cash provided by (used in) operating activities	1,147,622	(623,472)
Cash flows from investing activities:
Purchases of property, plant, and equipment	(512,547)	(623,778)
Net proceeds from sale of assets	0	286,815
Net cash used in investing activities - continuing operations	(512,547)	(336,963)
Net cash used in investing activities - discontinued operations	0	(16,055)
Net cash used in investing activities	(512,547)	(353,018)
Cash flows from financing activities:
Net change in line of credit	(463,083)	779,559
Proceeds from finance lease obligations	0	397,536
Principal payments on finance lease obligations	(77,798)	(75,448)
Repayment of term debt	(54,260)	(48,188)
Repurchases of common stock	(37,654)	(63,995)
Net cash provided by (used in) financing activities - continuing operations	(632,795)	989,464
Net cash used in financing activities - discontinued operations	(1,807)	(15,731)
Net cash provided by (used in) financing activities	(634,602)	973,733
Net increase (decrease) in cash	473	(2,757)
Cash at beginning of period	4,014	5,055
Cash at end of period	4,487	2,298
Supplemental disclosures of cash flow information:
Interest	323,633	268,997
Income taxes	90	2,841
Right-of-use (ROU) assets acquired (included in other assets)	38,192	117,302
Amortization of operating lease ROU assets (included in other assets)	4,275	5,820
Computer Software, Intangible Asset [Member]
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Amortization of cloud computing implementation costs	$ 60,909	$ 0