Note 10 - Components of Net Periodic Benefit Cost (Income) for the Domestic and International Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
United States Pension Plan of US Entity [Member]
Components of net periodic benefit cost
Interest cost	$ 608	$ 828	$ 1,823	$ 2,484
Expected return on plan assets	(718)	(1,039)	(2,153)	(3,117)
Recognized actuarial loss	202	130	608	390
Net periodic cost/(income)	92	(81)	278	(243)
Foreign Pension Plan [Member]
Components of net periodic benefit cost
Interest cost	146	218	442	682
Recognized actuarial loss	83	37	249	116
Net periodic cost/(income)	420	419	1,271	1,311
Service cost	193	166	585	519
Amortization of prior service benefit	$ (2)	$ (2)	$ (5)	$ (6)