Note 7 - Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013	Jun. 30, 2012
Note 7 - Income Taxes (Details) [Line Items]
Effective Income Tax Rate Reconciliation, Percent	38.00%	39.20%
Unrecognized Tax Benefits (in Dollars)	$ 0.8	$ 0.8	$ 0.7
Unrecognized Tax Benefits that Would Impact Effective Tax Rate (in Dollars)	$ 0.6	$ 0.6
Internal Revenue Service (IRS) [Member]
Note 7 - Income Taxes (Details) [Line Items]
Open Tax Year Subject To Examination		2009 through 2012
State and Local Jurisdiction [Member]
Note 7 - Income Taxes (Details) [Line Items]
Open Tax Year Subject To Examination		2008 through 2012
Foreign Tax Authority [Member]
Note 7 - Income Taxes (Details) [Line Items]
Open Tax Year Subject To Examination		2005 through 2012