Note 7 - Pension and Other Postretirement Benefits - Summary of Reclassification (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Cost of products sold	$ (75,566)	$ (67,518)	$ (227,926)	$ (208,496)
Selling, general and administrative expenses	(14,207)	(14,122)	(43,435)	(41,800)
Total amount reclassified	$ 532	(281)	$ (1,069)	(2,973)
Accounting Standards Update 2017-07 [Member]
Cost of products sold		(259)		(2,416)
Selling, general and administrative expenses		(120)		(1,307)
Total amount reclassified		$ (379)		$ (3,723)

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount of income (expense) related to nonoperating activities, classified as other.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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