Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Feb. 29, 2016	Feb. 28, 2015
Cash flows from operations:
Net income	$ 80,962	$ 168,195
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Stock based compensation	11,252	13,145
(Gain)/Loss on disposal of property, plant, and equipment	(40,067)	7,269
Depreciation and amortization expense	202,013	229,454
Bad debt expense (recovery)	26,679	7,626
Deferred income taxes	1,263	(14,787)
Changes in assets and liabilities:
Accounts receivable	(778,036)	167,643
Inventories	1,014,879	(1,043,896)
Income taxes receivable	35,778	92,513
Other assets	(164,455)	(330,677)
Accounts payable	107,414	171,527
Contracts in progress, net	87,430	91,316
Customer deposits	266,285	691,425
Accrued expenses	(231,855)	(173,280)
Net cash provided by operating activities	619,542	77,473
Cash flows from investing activities:
Purchases of property, plant, and equipment	(34,694)	(86,528)
Net proceeds from sale of assets	1,170,642	14,456
Net cash provided by (used in) investing activities	1,135,948	(72,072)
Cash flows from financing activities:
Net change in line of credit	(169,481)	904,261
Repayment of term debt	$ (1,404,080)	$ (316,909)
Dividends paid to stockholders
Net cash provided by (used in) financing activities	$ (1,573,561)	$ 384,924
Net increase in cash	181,929	390,325
Cash at beginning of period	447,334	511,716
Cash at end of period	629,263	902,041
Supplemental disclosures of cash flow information:
Interest	$ 79,357	$ 80,860