Receivables, net

12 Months Ended

Dec. 31, 2023

Time-Sharing Transactions, Maturities of Notes Receivable, Net [Abstract]

7. Receivables, net

Receivables include billed and unbilled amounts for services provided to clients for which we have an unconditional right to payment as of the end of the applicable period and generally do not bear interest. The following table presents major categories of receivables:


(in thousands)	December 31, 2023		December 31, 2022
Contracts completed and in progress:
Billed	$	343,190	$	220,809
Unbilled	119,170		120,348
Total contracts completed and in progress	462,360		341,157
Materials sales	61,808		52,182
Other	76,084		71,790
Total gross receivables	600,252		465,129
Less: allowance for credit losses	1,547		1,142
Total net receivables	$	598,705	$	463,987

Included in other receivables at December 31, 2023 and 2022 were items such as estimated recovery from back charge claims, notes receivable, fuel tax refunds and income tax refunds. Other receivables at both December 31, 2023 and 2022 also included $24.9 million of working capital contributions in the form of a loan to a partner in one of our unconsolidated joint ventures, plus accrued interest at prime plus 3.0% per annum. No receivable individually exceeded 10% of total net receivables at any of these dates.