Note 9 - Defined Benefit Pension Plan (Details) - Net Periodic Pension Cost: (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net Periodic Pension Cost: [Abstract]
Interest cost on projected benefit obligation	$ 900	$ 999	$ 2,702	$ 2,994
Expected return on plan assets	(1,346)	(1,197)	(4,040)	(3,591)
Recognized actuarial loss	496	424	1,488	1,272
Net periodic pension expense	$ 50	$ 226	$ 150	$ 675