Note 8 - Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Note 8 - Income Taxes (Details) [Line Items]
Effective Income Tax Rate Reconciliation, Percent	38.90%	40.40%
Unrecognized Tax Benefits	$ 0.7	$ 1.1
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	0.5
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ (0.2)
Internal Revenue Service (IRS) [Member]
Note 8 - Income Taxes (Details) [Line Items]
Open Tax Year Subject To Examination	2008 through 2013
State and Foreign Jurisdictions [Member]
Note 8 - Income Taxes (Details) [Line Items]
Open Tax Year Subject To Examination	2008 to 2013