Note 10 - Acquisitions (Details) (USD $)	9 Months Ended						0 Months Ended	9 Months Ended	1 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014 Consigned Inventory [Member] Agricultural Products [Member] Agro Trend [Member]	Jun. 25, 2013 Consigned Inventory [Member] Agricultural Products [Member] Agro Trend [Member]	May 29, 2014 US Bank [Member]	May 10, 2012 US Bank [Member]	Jun. 25, 2013 Agro Trend [Member]	Aug. 31, 2013 Agro Trend [Member]	Sep. 30, 2013 Ohio Metal Working Products Company [Member]
Note 10 - Acquisitions (Details) [Line Items]
Payments to Acquire Businesses, Gross							$ 311,000	$ 311,346	$ 3,172,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment							88,000		868,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory							223,000	223,172	1,142,000
Other Inventory, Materials, Supplies and Merchandise under Consignment, Gross				600,000
Increase (Decrease) in Inventories	(103,537)	(855,817)	(364,000)
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Land And Building									1,200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable									38,000
Debt Instrument, Face Amount					$ 1,000,000	$ 880,000