Note 12 - Pension and Other Postretirement Benefit Plans (Details) - The Following Benefit Payments Under the Directors’ Plan, Which Reflect Expected Future Service, are Expected to be Paid (Directors' Plan [Member], USD $)	Dec. 31, 2014
Directors' Plan [Member]
Note 12 - Pension and Other Postretirement Benefit Plans (Details) - The Following Benefit Payments Under the Directors’ Plan, Which Reflect Expected Future Service, are Expected to be Paid [Line Items]
2015	$ 288,000
2016	288,000
2017	288,000
2018	272,000
2019	288,000
2020 – 2024	$ 1,336,000