Note 15 - Net Sales (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Accounts Receivables and Contract Assets [Table Text Block]

	December 31,
	2019		2018
Accounts receivable - trade	$	79,746	$	64,017
Current contract assets		38,533		49,236
Current contract liabilities		1,821		437