Note 2 - Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
financingofdistributorinventorypurchase	$ 9.1	$ 66.3
Document Fiscal Year Focus	2011
Advertising Expense [Abstract]
Advertising expense	$ 5.8	$ 6.0	$ 5.0
Furniture and Fixtures [Member]
Property, Plant and Equipment [Abstract]
Minimum estimated useful lives	3
Maximum estimated useful lives	7
Building and Building Improvements [Member]
Property, Plant and Equipment [Abstract]
Maximum estimated useful lives	40
Equipment [Member]
Property, Plant and Equipment [Abstract]
Minimum estimated useful lives	3
Maximum estimated useful lives	7
Land and Land Improvements [Member]
Property, Plant and Equipment [Abstract]
Maximum estimated useful lives	60