Note 3 - Acquisition of Businesses (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended					3 Months Ended
	Mar. 30, 2013 Minimum [Member] Selco A/S [Member] Distribution Rights [Member]	Mar. 30, 2013 Maximum [Member] Selco A/S [Member] Distribution Rights [Member]	Mar. 30, 2013 Accel AB [Member] Licensing Agreements [Member]	Sep. 29, 2012 Accel AB [Member]	May 31, 2012 Accel AB [Member]	Mar. 30, 2013 Cole Hersee Company [Member] Trademarks [Member]	Sep. 26, 2012 Terra Power [Member]
Business Acquisition, Percentage of Voting Interests Acquired					100.00%		100.00%
Business Acquisition, Cost of Acquired Entity, Cash Paid (in Dollars)					$ 23.9		$ 10.6
Finite-Lived Intangible Asset, Useful Life	3 years	10 years	10 years			5 years
Business Acquisition, Inventory Step-up (in Dollars)					0.4
Non-cash Charges Related to Inventory Step-up (in Dollars)				$ 0.4