Note 5 - Derivative Instruments and Hedging Activities - Fair Value of Derivatives (Details) - Fair Value, Inputs, Level 2 [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Commodity Contract [Member]
Fair Value of Derivatives	$ 6	$ (160)
Foreign Exchange Contract [Member]
Fair Value of Derivatives	31	(117)
Interest Rate Swap [Member]
Fair Value of Derivatives	$ (10,425)	$ 8,307

Fair value of the assets less the liabilities of a derivative or group of derivatives.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611

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Balance Type:	debit
Period Type:	instant