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Note 9 - Receivables, Net - Schedule of Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Gross receivables	$ 665,213	$ 547,791	$ 713,880
Less: allowance for credit losses	3,265	374	908
Total net receivables	661,948	547,417	712,972
Completed and in Progress [Member]
Billed	355,293	299,633	417,373
Unbilled	167,311	149,696	182,762
Gross receivables	522,604	449,329	600,135
Material Sales [Member]
Gross receivables	70,918	42,936	72,486
Other Business Products and Services [Member]
Gross receivables	$ 71,691	$ 55,526	$ 41,259

X

- Definition

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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Amount of allowance for credit loss on accounts receivable, classified as current.

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