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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
6 Months Ended
May 31, 2020
May 31, 2019
Cash flows from operations:    
Net (loss) from continuing operations $ (1,238,913) $ (961,974)
Adjustments to reconcile net (loss) to net cash provided by operating activities:    
Stock based compensation 152,752 119,444
(Gain) Loss on disposal of property, plant, and equipment 8,306 (10,303)
Depreciation and amortization expense 459,436 549,333
Bad debt expense 10,478 3,673
Deferred income taxes (332,417) (279,536)
Changes in assets and liabilities:    
Accounts receivable (483,894) (1,134,324)
Inventories (754,204) 151,839
Net investment in sales-type leases 76,180 53,436
Other assets (142,341) (141,018)
Accounts payable (8,121) 133,974
Contracts in progress, net 744,382 732,952
Customer deposits 119,949 366,654
Income taxes payable (2,545)
Accrued expenses 69,630 (97,669)
Net cash (used in) operating activities (1,318,777) (516,064)
Cash flows from investing activities:    
Purchases of property, plant, and equipment (412,294) (186,215)
Net proceeds from sale of assets 5,000 893,713
Net cash provided by (used in) investing activities (407,294) 707,498
Cash flows from financing activities:    
Net change in line of credit (552,000) (94,000)
Proceeds from term debt 1,242,900
Repayment of term debt (42,490) (273,725)
Repurchases of common stock (26,536) (10,820)
Net cash provided by (used in) financing activities 1,725,874 (190,545)
Net increase (decrease) in cash (197) 889
Cash at beginning of period 3,145 3,512
Cash at end of period 2,948 4,401
Supplemental disclosures of cash flow information:    
Interest 138,280 170,992
Income taxes $ 30,394 $ 3,855