Note 12 - Pension and Other Postretirement Benefit Plans (Details) - The Following Benefit Payments under the Postretirement Plan, Which Reflect Expected Future Service, Are Expected to be Paid (Retirement Plan [Member], USD $)	Dec. 31, 2014
Retirement Plan [Member]
Note 12 - Pension and Other Postretirement Benefit Plans (Details) - The Following Benefit Payments under the Postretirement Plan, Which Reflect Expected Future Service, Are Expected to be Paid [Line Items]
2015	$ 1,094,000
2016	1,145,000
2017	1,161,000
2018	1,161,000
2019	1,181,000
2020 – 2024	$ 6,490,000