Note 2 - Acquisition of Businesses (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				12 Months Ended		1 Months Ended		12 Months Ended	1 Months Ended		12 Months Ended	1 Months Ended			3 Months Ended		1 Months Ended		3 Months Ended			1 Months Ended		3 Months Ended			12 Months Ended
	Sep. 29, 2012	Mar. 31, 2012	Dec. 31, 2011	Apr. 02, 2011	Dec. 29, 2012	Dec. 31, 2011	Aug. 31, 2011 Minimum [Member] Selco A/S [Member] Distribution Rights [Member]	May 31, 2012 Minimum [Member] Accel AB [Member] Distribution Rights [Member]	Dec. 29, 2012 Minimum [Member] Distribution Rights [Member]	Aug. 31, 2011 Maximum [Member] Selco A/S [Member] Distribution Rights [Member]	May 31, 2012 Maximum [Member] Accel AB [Member] Distribution Rights [Member]	Dec. 29, 2012 Maximum [Member] Distribution Rights [Member]	Dec. 31, 2010 Cole Hersee Company [Member] Customer Lists [Member]	Dec. 31, 2010 Cole Hersee Company [Member] Distribution Rights [Member]	Dec. 31, 2010 Cole Hersee Company [Member] Trademarks [Member]	Apr. 02, 2011 Cole Hersee Company [Member]	Dec. 17, 2010 Cole Hersee Company [Member]	Aug. 31, 2011 Selco A/S [Member] Trademarks [Member]	Aug. 31, 2011 Selco A/S [Member] Licensing Agreements [Member]	Mar. 31, 2012 Selco A/S [Member]	Dec. 31, 2011 Selco A/S [Member]	Aug. 03, 2011 Selco A/S [Member]	May 31, 2012 Accel AB [Member] Trademarks [Member]	May 31, 2012 Accel AB [Member] Licensing Agreements [Member]	Sep. 29, 2012 Accel AB [Member]	May 31, 2012 Accel AB [Member]	Sep. 26, 2012 Terra Power [Member]	Dec. 29, 2012 Distribution Rights [Member]		Dec. 31, 2011 Distribution Rights [Member]
Business Acquisition, Cost of Acquired Entity, Cash Paid (in Dollars)																	$ 50.0					$ 11.1
Finite-Lived Intangible Asset, Useful Life					12 years 109 days	12 years 146 days	3 years	3 years	3 years	10 years	10 years	20 years	13 years	5 years	10 years			5 years	10 years				5 years	10 years				13 years 219 days	[1]	13 years 292 days	[1]
Business Acquisition, Inventory Step-up (in Dollars)			3.7		0.6	3.7											3.7					0.7				0.4
Non-cash Charges Related to Inventory Step-up (in Dollars)	0.4	0.2	0.5	3.7												3.7					0.5				0.4
Business Acquisition, Percentage of Voting Interests Acquired																						100.00%				100.00%	100.00%
Cost of Goods Sold (in Dollars)																				0.2
Business Acquisition, Cost of Acquired Entity, Purchase Price (in Dollars)																										$ 23.9	$ 10.6

[1] Increase to gross carrying value for distribution network in 2012 is related to the preliminary Accel acquisition purchase price discussed in Note 2. Other changes are primarily due to the impact of foreign currency translation adjustments.