Note 4 - Accumulated Other Comprehensive Loss (Details) - Disclosure of Changes in Accumulated Other Comprehensive Loss (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance – January 1, 2015	$ (15,767)	$ (2,415)
Ending Balance – March 31, 2015	(22,585)	(2,844)
Other comprehensive loss before reclassifications	(6,818)	(429)
Net current-period other comprehensive loss	(6,818)	(429)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance – January 1, 2015	(1,878)	1,204
Ending Balance – March 31, 2015	(7,424)	1,275
Other comprehensive loss before reclassifications	(5,546)	71
Net current-period other comprehensive loss	(5,546)	71
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance – January 1, 2015	(13,243)	(4,393)
Ending Balance – March 31, 2015	(13,243)	(4,393)
Other comprehensive loss before reclassifications	0	0
Amounts reclassified from AOCL	0	0
Net current-period other comprehensive loss	0	0
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance – January 1, 2015	(646)	774
Ending Balance – March 31, 2015	(1,918)	274
Other comprehensive loss before reclassifications	(1,272)	(500)
Net current-period other comprehensive loss	$ (1,272)	$ (500)