Note 12 - Pension and Other Postretirement Benefit Plans (Details) - For the Retirement Plan, the Change in Benefit Obligation and Assets (Retirement Plan [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Retirement Plan [Member]
Change in benefit obligation:
Projected benefit obligation, balance	$ 22,531	$ 21,101
Interest cost	827	879	919
Actuarial (gains) loss	(2,485)	1,428
Benefits paid	(1,133)	(877)
Projected benefit obligation, balance	19,740	22,531	21,101
Change in plan assets:
Market value of assets, balance	17,300	15,421
Actual return on plan assets	3,498	2,033
Employer contributions	831	723
Benefits paid	(1,133)	(877)
Market value of assets, balance	20,496	17,300	15,421
Accrued pension prepaid (liability) included in other assets (liabilities)	$ 756	$ (5,231)