Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	May 31, 2017	May 31, 2016
Cash flows from operations:
Net income (loss) from continuing operations	$ (762,547)	$ 150,485
Net (loss) from discontinued operations	(15,041)	(126,084)
Adjustments to reconcile net (loss) to net cash provided by operating activities:
Stock based compensation	72,959	39,429
(Gain)/Loss on disposal of property, plant, and equipment	11,945	(43,884)
Depreciation and amortization expense	342,387	352,091
Bad debt expense	(4,952)	2,255
Deferred income taxes	(360,464)	(17,590)
Changes in assets and liabilities:
Accounts receivable	(512,044)	527,180
Inventories	(425,931)	978,582
Income taxes receivable	16,505	34,766
Other assets	(273,758)	(189,811)
Accounts payable	923,695	82,602
Contracts in progress, net	34,618	193,448
Customer deposits	353,772	125,724
Accrued expenses	(10,843)	(205,298)
Net cash provided by operating activities - continuing operations	(594,658)	2,029,979
Net cash provided by (used in) operating activities - discontinued operations	(22,635)	161,453
Net cash provided by operating activities	(617,293)	2,191,432
Cash flows from investing activities:
Purchases of property, plant, and equipment	(293,919)	(61,225)
Net proceeds from sale of assets	12,190	1,170,842
Net cash provided by (used in) investing activities - continuing operations	(281,729)	1,109,617
Net cash provided by (used in) investing activities - discontinued operations	38,736	(8,437)
Net cash provided by (used in) investing activities	(242,993)	1,101,180
Cash flows from financing activities:
Net change in line of credit	(450,000)	1,858,046
Repayment of term debt	(364,080)	(1,551,398)
Repurchases of common stock	(6,425)
Net cash (used in) financing activities - continuing operations	79,495	(3,409,444)
Net cash (used in) financing activities - discontinued operations	(65,035)	(62,996)
Net cash (used in) financing activities	14,460	(3,472,440)
Effect of exchange rate changes on cash	(5,098)
Net increase (decrease) in cash	(850,924)	(179,828)
Cash at beginning of period	1,063,716	447,334
Cash at end of period	212,792	267,506
Supplemental disclosures of cash flow information:
Interest	148,203	140,820
Income taxes		$ 4,514