Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Feb. 28, 2017	Feb. 29, 2016
Cash flows from operations:
Net income (loss) from continuing operations	$ (253,642)	$ 133,549
Net income (loss) from discontinued operations	3,613	(52,587)
Adjustments to reconcile net (loss) to net cash provided by operating activities:
Stock based compensation	26,557	11,252
(Gain)/Loss on disposal of property, plant, and equipment	2,463	(40,067)
Depreciation and amortization expense	170,789	173,303
Bad debt expense	5,601	17,046
Deferred income taxes	(107,034)	1,263
Changes in assets and liabilities:
Accounts receivable	(44,089)	(585,088)
Inventories	295,975	862,920
Income taxes receivable	(5,537)	35,778
Other assets	(255,629)	(198,801)
Accounts payable	80,634	53,272
Contracts in progress, net	59,422	87,430
Customer deposits	503,702	239,094
Accrued expenses	(166,649)	(212,033)
Net cash provided by operating activities - continuing operations	312,563	578,918
Net cash provided by (used in) operating activities - discontinued operations	(22,039)	40,620
Net cash provided by operating activities	290,524	619,538
Cash flows from investing activities:
Purchases of property, plant, and equipment	(195,020)	(26,257)
Net proceeds from sale of assets	12,190	1,170,642
Net cash provided by (used in) investing activities - continuing operations	(182,830)	1,144,385
Net cash provided by (used in) investing activities - discontinued operations	38,736	(8,437)
Net cash provided by (used in) investing activities	(144,094)	1,135,948
Cash flows from financing activities:
Net change in line of credit	250,000	169,481
Repayment of term debt	(182,119)	(1,372,767)
Repurchases of common stock	(5,989)
Net cash (used in) financing activities - continuing operations	(438,108)	(1,542,248)
Net cash (used in) financing activities - discontinued operations	(32,281)	(31,313)
Net cash (used in) financing activities	(470,389)	(1,573,561)
Effect of exchange rate changes on cash	11,022
Net increase (decrease) in cash	(312,937)	181,925
Cash at beginning of period	1,063,716	447,334
Cash at end of period	750,779	629,259
Supplemental disclosures of cash flow information:
Interest	71,338	79,357
Income taxes	$ 3,125