Note 2 - Purchase Price Allocations and Provisional Fair Values (Details) - USD ($) $ in Millions	Jul. 31, 2015	Dec. 01, 2014	Jul. 02, 2014
Stork Food Dairy Systems BV [Member] | Customer Relationships [Member]
Tradename	$ 2.1
Stork Food Dairy Systems BV [Member] | Trade Names [Member]
Tradename	12.1
Stork Food Dairy Systems BV [Member] | Patents [Member]
Tradename	3.9
Stork Food Dairy Systems BV [Member]
Cash	1.1
Accounts receivable	10.0
Other receivables	2.5
Inventories	4.8
Costs in excess of billings on projects in progress	7.8
Property, plant and equipment	9.8
Deferred Tax Asset	1.1
Total assets	55.2
Accounts payable	9.2
Billings in excess of costs on projects	7.6
Other liabilities	9.7
Deferred taxes	5.9
Warranty obligations	0.6
Total liabilities	33.0
Total purchase price	51.8
Goodwill	$ 29.6
Wolf-Tec, Inc. [Member] | Customer Relationships [Member]
Tradename		$ 17.3
Wolf-Tec, Inc. [Member] | Trade Names [Member]
Tradename		1.5
Wolf-Tec, Inc. [Member] | Intellectual Property [Member]
Tradename		2.8
Wolf-Tec, Inc. [Member] | Noncompete Agreements [Member]
Tradename		0.8
Wolf-Tec, Inc. [Member] | Order or Production Backlog [Member]
Tradename		0.3
Wolf-Tec, Inc. [Member]
Cash		0.2
Accounts receivable		2.3
Other receivables		0.3
Inventories		6.5
Property, plant and equipment		7.7
Deferred Tax Asset		0.9
Total assets		40.6
Accounts payable		1.7
Other liabilities		1.3
Total liabilities		3.3
Total purchase price		53.9
Goodwill		16.6
Deferred revenue		$ 0.3
ICS Solutions [Member] | Customer Relationships [Member]
Tradename			$ 15.7
ICS Solutions [Member] | Other Intangible Assets [Member]
Tradename			8.4
ICS Solutions [Member]
Cash			10.0
Accounts receivable			2.3
Inventories			0.4
Property, plant and equipment			0.1
Total assets			36.9
Accounts payable			1.3
Other liabilities			2.4
Deferred taxes			4.1
Total liabilities			10.1
Total purchase price			45.7
Goodwill			18.9
Deferred revenue			$ 2.3