Note 9 - Pension and Other Postretirement Benefit Plans (Details) (USD $)	6 Months Ended
	Jun. 30, 2014
Outside Director Pension Plan [Member]
Note 9 - Pension and Other Postretirement Benefit Plans (Details) [Line Items]
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	$ 200,000
Defined Benefit Plan, Contributions by Employer	48,000
Other Postretirement Benefit Plan [Member]
Note 9 - Pension and Other Postretirement Benefit Plans (Details) [Line Items]
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	300,000
Defined Benefit Plan, Contributions by Employer	$ 34,000