Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Aug. 31, 2023	Aug. 31, 2022
Cash flows from operations:
Net income (loss) from continuing operations	$ 920,929	$ 190,681
Net income (loss) on discontinued operations	(346,084)	(184,278)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Stock based compensation	227,255	224,291
Decrease in obsolete inventory reserves	(143,165)	(220,667)
Loss on disposal of property, plant, and equipment	21,661	3,971
Gain on disposal of assets held for lease	(114,156)	0
Depreciation and amortization expense	599,181	443,008
Accrued interest on deferred debt payments	0	8,551
Increase (decrease) in allowance for doubtful accounts	8	(3,684)
Deferred income taxes	144,454	(720)
Changes in assets and liabilities:
Accounts receivable	(1,989,230)	(1,181,166)
Inventories	(1,076,784)	(873,359)
Other assets	(14,687)	(75,209)
Accounts payable	367,912	659,520
Contracts in progress, net	480,643	4,797
Customer deposits	(405,076)	1,022,464
Income taxes payable	1,500	0
Accrued expenses	(19,633)	75,790
Net cash provided by (used in) operating activities - continuing operations	(999,188)	278,268
Net cash provided by (used in) operating activities - discontinued operations	480,541	(80,604)
Net cash provided by (used in) operating activities	(518,647)	197,664
Cash flows from investing activities:
Purchases of property, plant, and equipment	(569,445)	(1,123,422)
Net proceeds from sale of assets	286,815	9,300
Net cash used in investing activities - continuing operations	(282,630)	(1,114,122)
Net cash provided by (used in) investing activities - discontinued operations	80,595	(64,371)
Net cash used in investing activities	(202,035)	(1,178,493)
Cash flows from financing activities:
Net change in line of credit	(610,059)	(484,470)
Proceeds from finance lease obligations	397,536	0
Principal payments on finance lease obligations	(127,888)	(74,608)
Proceeds from term debt	0	350,000
Repayment of term debt	(73,019)	(74,098)
Proceeds from common stock purchase agreement	0	431,408
Cost of equity issuance	0	(42,425)
Repurchases of common stock	(63,995)	(92,432)
Net cash provided by financing activities - continuing operations	742,693	982,315
Net cash provided by financing activities - discontinued operations	(22,849)	0
Net cash provided by financing activities	719,844	982,315
Net increase (decrease) in cash	(838)	1,486
Cash at beginning of period	5,055	2,658
Cash at end of period	4,217	4,144
Supplemental disclosures of cash flow information:
Interest	434,799	277,488
Income taxes	2,841	800
Supplemental disclosures of non-cash operating activities:
Right-of-use (ROU) assets acquired (included in other assets)	134,543	698,153
Less: Cash proceeds received under Manufacturing 4.0 Grant applied to ROU Assets	0	(224,513)
Total (ROU) assets acquired (included in other assets)	134,543	473,640
Amortization of operating lease ROU assets (included in other assets)	7,001	8,306
Market value of commitment shares issued under purchase agreement	$ 0	$ 160,000