Note 7 - Employee Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended
	Apr. 30, 2014 Subsequent Event [Member]	Dec. 31, 2014 Scenario, Forecast [Member] Unfunded Supplemental Executive Retirement Plan [Member]	Dec. 31, 2014 Scenario, Forecast [Member]
Note 7 - Employee Benefit Plans (Details) [Line Items]
Defined Benefit Plan, Contributions by Employer	$ 2.0
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year		$ 0.3	$ 7.5