Note 9 - Receivables, Net (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

(in thousands)	September 30, 2022		December 31, 2021 (1)		September 30, 2021
Contracts completed and in progress:
Billed	$	279,864	$	236,053	$	278,313
Unbilled		177,299		126,371		217,534
Total contracts completed and in progress		457,163		362,424		495,847
Materials sales		87,870		43,746		80,357
Other		74,385		59,496		110,302
Total gross receivables		619,418		465,666		686,506
Less: allowance for credit losses		1,274		1,078		1,684
Total net receivables	$	618,144	$	464,588	$	684,822

(1) These balances do not include amounts held for sale (see Note 3).