Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	May 31, 2016	May 31, 2015
Cash flows from operations:
Net income	$ 24,401	$ 399,816
Adjustments to reconcile net income to net cash provided by operating activities:
Stock based compensation	39,429	28,484
(Gain)/Loss on disposal of property, plant, and equipment	(43,884)	6,955
Depreciation and amortization expense	409,614	459,412
Bad debt expense (recovery)	2,255	3,240
Deferred income taxes	(17,590)	(72,912)
Changes in assets and liabilities:
Accounts receivable	512,721	26,736
Inventories	1,206,115	(881,977)
Income taxes receivable	34,766	100,417
Other assets	(191,626)	(319,737)
Accounts payable	94,341	64,306
Contracts in progress, net	193,448	(37,362)
Customer deposits	140,606	607,275
Income taxes payable		10,150
Accrued expenses	(213,164)	(88,671)
Net cash provided by operating activities	2,191,432	306,132
Cash flows from investing activities:
Purchases of property, plant, and equipment	(69,662)	(139,994)
Net proceeds from sale of assets	1,170,842	14,456
Net cash provided by (used in) investing activities	1,101,180	(125,538)
Cash flows from financing activities:
Net change in line of credit	1,858,046	(749,772)
Repayment of term debt	(1,614,394)	(637,930)
Dividends paid to stockholders		(202,428)
Net cash (used in) financing activities	(3,472,440)	(90,586)
Net increase (decrease) in cash	(179,828)	90,008
Cash at beginning of period	447,334	511,716
Cash at end of period	267,506	601,724
Supplemental disclosures of cash flow information:
Interest	140,820	160,803
Income taxes	$ 4,514	$ 205,296