Note 12 - Pension and Other Postretirement Benefit Plans (Details) - For the Directors’ Plan, the Change in Benefit Obligation and Assets (Directors' Plan [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Directors' Plan [Member]
Change in benefit obligation:
Projected benefit obligation, balance	$ 2,706	$ 2,647
Service cost	82	80	70
Interest cost	98	110	124
Actuarial gain	(122)	(44)
Benefits paid	(98)	(87)
Projected benefit obligation, balance	2,666	2,706	2,647
Change in plan assets:
Employer contributions	98	87
Benefits paid	(98)	(87)
Accrued pension cost included in other liabilities	$ (2,666)	$ (2,706)