Note 1 - Summary of Significant Accounting Policies - Summary of Changes to Goodwill by Business Segment (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2019	Dec. 31, 2018
Gross Balance		$ 37,572
Accumulated Impairments		0
Balance	$ 37,572	37,572
Adjustments to Goodwill	0
Manufacturing [Member]
Gross Balance		18,270
Accumulated Impairments		0
Balance	18,270	18,270
Adjustments to Goodwill	0
Plastics [Member]
Gross Balance		19,302
Accumulated Impairments		0
Balance	19,302	$ 19,302
Adjustments to Goodwill	$ 0

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 45
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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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+ References

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-Publisher FASB
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