Note 8 - Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012
Note 8 - Income Taxes (Details) [Line Items]
Effective Income Tax Rate Reconciliation, Percent	33.80%	37.40%
Unrecognized Tax Benefits	$ 1.2	$ 1.2	$ 0.8
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	1.2	1.2
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ (0.6)	$ (0.6)
Internal Revenue Service (IRS) [Member]
Note 8 - Income Taxes (Details) [Line Items]
Open Tax Year Subject To Examination		2009 through 2012
State and Local Jurisdiction [Member]
Note 8 - Income Taxes (Details) [Line Items]
Open Tax Year Subject To Examination		2008 through 2012
Foreign Tax Authority [Member]
Note 8 - Income Taxes (Details) [Line Items]
Open Tax Year Subject To Examination		2005 through 2012