Note 8 - Accumulated Other Comprehensive Income/(Loss) (Details) - Changes in Accumulated Other Comprehensive Income/(Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (62,680)	$ (19,113)	$ (44,981)	$ (18,962)
Other comprehensive income/(loss) before reclassifications	6,374	(3,551)	(11,628)	(3,921)
Amounts reclassified from accumulated other comprehensive income/(loss)	304	4,620	607	4,839
Net current-period other comprehensive income/(loss)	6,678	1,069	(11,021)	918
Ending balance	(56,002)	(18,044)	(56,002)	(18,044)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(29,393)	9,667	(11,410)	9,990
Other comprehensive income/(loss) before reclassifications	6,378	(3,515)	(11,605)	(3,838)
Amounts reclassified from accumulated other comprehensive income/(loss)	0	4,400	0	4,400
Net current-period other comprehensive income/(loss)	6,378	885	(11,605)	562
Ending balance	(23,015)	10,552	(23,015)	10,552
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(139)	(369)	(193)	(396)
Other comprehensive income/(loss) before reclassifications	(4)	(36)	(23)	(83)
Amounts reclassified from accumulated other comprehensive income/(loss)	73	75	146	149
Net current-period other comprehensive income/(loss)	69	39	123	66
Ending balance	(70)	(330)	(70)	(330)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(33,148)	(28,411)	(33,378)	(28,556)
Other comprehensive income/(loss) before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income/(loss)	231	145	461	290
Net current-period other comprehensive income/(loss)	231	145	461	290
Ending balance	$ (32,917)	$ (28,266)	$ (32,917)	$ (28,266)