Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2013 Agro Trend [Member]
Cash flows from operations:
Net income	$ 553,051	$ 1,359,894
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Stock based compensation	14,504	29,812
(Gain) on disposal of property, plant, and equipment	(958)	(603,454)
Depreciation expense	633,123	558,292
Bad debt expense (recovery)	39,207	3,880
Deferred income taxes	(10,000)	(97,147)
(Increase) decrease in:
Accounts receivable	(2,023,321)	309,986
Inventories	103,537	855,817
Income taxes receivable	(3,821)
Other current assets	(81,517)	40,991
Increase (decrease) in:
Accounts payable	192,203	234,643
Contracts in progress, net	(64,514)	(1,304,566)
Customer deposits	(26,114)	(36,567)
Income taxes payable		(476,695)
Accrued expenses	(209,896)	(178,581)
Net cash provided by (used in) operating activities	(884,516)	696,305
Cash flows from investing activities:
Purchases of property, plant, and equipment	(651,251)	(684,809)
Proceeds from sale of property, plant, and equipment	958	835,536
Purchase of assets of Agro Trend			(311,346)
Net cash provided by (used in) investing activities	(650,293)	(160,619)
Cash flows from financing activities:
Net change in line of credit	1,489,383
Proceeds from term debt	1,000,000	228,339
Repayment of term debt	(933,194)	(907,939)
Proceeds from the exercise of stock options	7,760	30,870
Net cash provided by (used in) financing activities	1,563,949	(648,730)
Net increase in cash	29,140	(113,044)
Cash at beginning of period	207,950	1,546,609
Cash at end of period	237,090	1,433,565
Cash paid during the period for:
Interest	273,726	229,581
Income taxes	296,845	1,234,345
Inventories			223,172
Equipment, tools and dies			88,174
Cash paid			$ 311,346