Note 5 - Goodwill and Other Intangibles - Components of Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Gross carrying value	$ 30,905	$ 26,184
Accumulated amortization	14,140	12,492
Net carrying value	16,765	13,692
Product Technology and Intellectual Property [Member]
Gross carrying value	12,286	11,728
Accumulated amortization	6,518	5,726
Net carrying value	5,768	6,002
Trademarks, Tradenames and Licenses [Member]
Gross carrying value	2,349	2,246
Accumulated amortization	1,661	1,561
Net carrying value	688	685
Customer Relationships [Member]
Gross carrying value	13,928	10,065
Accumulated amortization	4,398	3,806
Net carrying value	9,530	6,259
Other Intangible Assets [Member]
Gross carrying value	2,342	2,145
Accumulated amortization	1,563	1,399
Net carrying value	$ 779	$ 746

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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-Publisher FASB
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-SubTopic 30
-Section 50
-Paragraph 2
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