Note 2 - Acquisition of Businesses (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended	1 Months Ended					3 Months Ended		1 Months Ended		3 Months Ended
	Jul. 02, 2011	Aug. 31, 2011 Minimum [Member] Selco A/S [Member] Distribution Rights [Member]	Aug. 31, 2011 Maximum [Member] Selco A/S [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]	Jun. 01, 2012 Accel AB [Member]
Business Acquisition, Cost of Acquired Entity, Cash Paid								$ 50.0					$ 11.1	$ 23.9
Finite-Lived Intangible Asset, Useful Life		3 years	10 years	13 years	5 years	10 years			5 years	10 years
Business Acquisition, Inventory Step-up								3.7					0.7
Non-cash Charges Related to Inventory Step-up	$ 3.7						$ 3.7				$ 0.2	$ 0.5
Business Acquisition, Percentage of Voting Interests Acquired													100.00%	100.00%