Note 11 - Components of Net Periodic Benefit Cost (Details) - Net Periodic Benefit Cost (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net Periodic Benefit Cost [Abstract]
Interest cost	$ 772	$ 720	$ 1,544	$ 1,440
Expected return on plan assets	(777)	(726)	(1,554)	(1,452)
Recognized actuarial loss	146	228	292	456
Net expense	$ 141	$ 222	$ 282	$ 444