Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Nov. 30, 2012	Nov. 30, 2011
Net income	$ 2,665,087	$ 1,248,895
Stock based compensation	34,519	58,311
Impairment of asset available for sale	94,647
Depreciation expense	792,910	720,169
Amortization expense	60,000	60,000
Bad debt expense	(7,654)	(19,995)
Deferred income taxes	(41,721)	130,407
Accounts receivable	(739,984)	483,250
Inventories	(130,617)	546,711
Other current assets	(110,870)	46,844
Accounts payable	312,584	(666,950)
Contracts in progress, net	1,114,286	124,490
Customer deposits	(106,184)	(102,404)
Income taxes payable	470,304	(243,820)
Accrued expenses	596,964	(17,822)
Net cash provided by operating activities	5,004,271	2,368,086
Purchases of property, plant, and equipment	(799,598)	(859,324)
Net change in asset held for lease		(232,861)
Purchase of assets of Universal Harvester	(3,003,565)
Net cash (used in) investing activities	(3,803,163)	(1,092,185)
Proceeds from (repayments of) line of credit borrowings, net	(1,388,965)	(695,035)
Payments of notes payable to bank		(611,923)
Proceeds from term debt	2,880,000
Repayment of term debt	(869,987)
Proceeds from the exercise of stock options	9,110	74,429
Dividends paid to stockholders	(403,585)	(241,551)
Net cash provided by (used in) financing activities	226,573	(1,474,080)
Net increase (decrease) in cash	1,427,681	(198,179)
Cash at beginning of period	118,924	317,103
Cash at end of period	1,546,605	118,924
Interest	411,737	432,131
Income taxes	1,045,614	485,144
Equipment, tools and dies	364,053
Goodwill and intagible assets	618,729
Land and Building	1,108,573
Non-Cash Activity: Stock issued for purchase of assets	(35,550)
Universal Harvester Co [Member]
Inventories	947,760
Cash paid	$ 3,003,565