Note 1 - Basis of Presentation (Details) - Changes in Accumulated Other Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended			3 Months Ended			6 Months Ended			3 Months Ended		6 Months Ended				3 Months Ended			6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013		Jun. 30, 2014	Jun. 30, 2013		Jun. 30, 2014 Accumulated Translation Adjustment [Member]	Jun. 30, 2013 Accumulated Translation Adjustment [Member]		Jun. 30, 2014 Accumulated Translation Adjustment [Member]	Jun. 30, 2013 Accumulated Translation Adjustment [Member]		Jun. 30, 2013 Accumulated Defined Benefit Plans Adjustment [Member]		Jun. 30, 2014 Accumulated Defined Benefit Plans Adjustment [Member]	Jun. 30, 2013 Accumulated Defined Benefit Plans Adjustment [Member]		Mar. 31, 2014 Accumulated Defined Benefit Plans Adjustment [Member]	Jun. 30, 2014 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	Jun. 30, 2013 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]		Jun. 30, 2014 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	Jun. 30, 2013 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (2,844)	$ (13,494)		$ (2,415)	$ (14,496)		$ 1,275	$ (34)		$ 1,204	$ (34)		$ (12,081)		$ (4,393)	$ (12,081)		$ (4,393)	$ 274	$ (1,379)		$ 774	$ (2,381)
Ending Balance	(4,139)	(12,472)		(4,139)	(12,472)		1,188	(15)		1,188	(15)		(12,081)		(4,393)	(12,081)		(4,393)	(934)	(376)		(934)	(376)
Other comprehensive income (loss) before reclassifications	(1,295)	19		(1,724)	19		(87)	19		(16)	19				0	0			(1,208)			(1,708)	0
Amounts reclassified from accumulated other comprehensive loss		1,003	[1]	0	2,005	[2]			[1]	0	0	[2]		[1]	0	0	[2]			1,003	[1]	0	2,005	[2]
Net current-period other comprehensive income (loss)	$ (1,295)	$ 1,022		$ (1,724)	$ 2,024		$ (87)	$ 19		$ (16)	$ 19				$ 0	$ 0			$ (1,208)	$ 1,003		$ (1,708)	$ 2,005

[1] Represents amortization of unrealized losses on interest rate swaps to interest expense of $1,049 net of tax benefit of $46 for the three months ended June 30,2013

[2] Represents amortization of unrealized losses on interest rate swaps to interest expense of $2,097 net of tax benefit of $92 for the six months ended June 30,2013