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Note 3 - Derivative Instruments and Hedging Activities (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)	Oct. 23, 2013
Note 3 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Fair value of derivative contracts excluding impact of credit risk	$ (3,755)		$ (3,755)		$ (1,727)
Commodity Contract [Member]
Note 3 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Number of Instruments Held	3	2	3	2	3
Foreign Exchange Contract [Member]
Note 3 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Number of Instruments Held	2	2	2	2	1
Interest Rate Swap [Member]
Note 3 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Number of New Contracts Entered						2
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	$ 266	$ (1,208)	$ (1,006)	$ (1,708)
Commodity And Foreign Currency Contracts [Member]
Note 3 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(352)	224	(1,399)	(144)
Not Designated as Hedging Instrument [Member] | Cost of Sales [Member] | Commodity Contract [Member]
Note 3 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	(315)	279	(1,041)	(47)
Not Designated as Hedging Instrument [Member] | Cost of Sales [Member] | Foreign Exchange Contract [Member]
Note 3 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ (37)	$ (55)	$ (358)	$ (97)
Maximum [Member] | Commodity Contract [Member]
Note 3 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Higher Remaining Maturity Range			18 months
Maximum [Member] | Foreign Exchange Contract [Member]
Note 3 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Higher Remaining Maturity Range			12 months

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Fair value derivative contracts excluding impact of credit risk.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 815



-SubTopic 10



-Section 50



-Paragraph 4A



-Subparagraph (b)



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High end period remaining until maturity for the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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