Note 6 - Business Combination (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block]

Carrying amount at December 31, 2020	$	3,574
Change in fair value		(389	)
Less payments		(1,052	)
Carrying amount at September 30, 2021	$	2,133

Emerald Medical Services and Emerald Extrusion Services [Member]

Notes Tables

Schedule of Business Acquisitions, by Acquisition [Table Text Block]

Current assets	$	3,161
Property, plant and equipment		360
Intangible assets		6,400
Goodwill		4,321
Noncurrent assets		169
Current liabilities		(1,105	)
Noncurrent liabilities		(1,491	)
Total consideration paid	$	11,815