Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
Aug. 31, 2019	Aug. 31, 2018
Cash flows from operations:
Net (loss) from continuing operations	$ (1,251,190)	$ (1,948,093)
Net (loss) from discontinued operations		(50,853)
Adjustments to reconcile net (loss) to net cash provided by (used in) operating activities:
Stock based compensation	160,045	158,090
Loss on release of cumulative translation adjustment		253,180
Realized foreign currency loss		3,830
Impairment of asset held for lease		(199,175)
(Gain)/Loss on disposal of property, plant, and equipment	(10,000)	(12,084)
Depreciation and amortization expense	774,068	681,939
Bad debt expense (recovery)	(1,402)	(8,090)
Deferred income taxes	(362,834)	(103,854)
Changes in assets and liabilities:
Accounts receivable	(963,875)	(222,783)
Inventories	494,188	489,189
Net investment in sales-type leases	87,465	(329,021)
Other assets	(109,422)	100,020
Accounts payable	233,195	172,943
Contracts in progress, net	1,149,423	9,056
Customer deposits	114,368	(466,401)
Income taxes payable		400
Accrued expenses	62,613	252,748
Net cash provided by (used in) operating activities - continuing operations	376,642	(769,756)
Net cash (used in) operating activities - discontinued operations		(89,697)
Net cash provided by (used in) operating activities	376,642	(859,453)
Cash flows from investing activities:
Purchases of property, plant, and equipment	(367,450)	(265,418)
Net proceeds from sale of assets	899,713	52,607
Net cash provided by (used in) investing activities - continuing operations	532,263	(212,811)
Net cash provided by investing activities - discontinued operations		1,418,761
Net cash provided by investing activities	532,263	1,205,950
Cash flows from financing activities:
Net change in line of credit	596,000	(231,000)
Repayment of term debt	(293,974)	(164,115)
Repurchases of common stock	(17,398)	(21,310)
Net cash provided by (used in) financing activities - continuing operations	(907,372)	45,575
Net cash (used in) financing activities - discontinued operations		(599,584)
Net cash (used in) financing activities	(907,372)	(554,009)
Net increase (decrease) in cash	1,533	(207,512)
Cash at beginning of period	3,512	212,400
Cash at end of period	5,045	4,888
Supplemental disclosures of cash flow information:
Interest	253,140	225,249
Income taxes	3,855	3,600
Supplemental disclosures of non-cash operating and investing activities:
Transfer of inventory to assets held for lease		$ 808,766

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Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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The cash outflow to reacquire common stock during the period.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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Amount of expense (reversal of expense) for expected credit loss on accounts receivable.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Amount of noncash expense for share-based payment arrangement.

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