Accounts receivable consisted of the following:


	December 31,
(table only in thousands)	2024			2023
Accounts receivable	$	168,435		$	119,193
Allowance for credit losses		(8,863	)		(6,460	)
Total accounts receivable	$	159,572		$	112,733

Accounts receivable, net as of the beginning of the prior year period, or January 1, 2023, were $83.1 million.

Balances billed, but not paid by customers under retainage provisions in contracts, amounted to approximately $13.6 million and $3.2 million at December 31, 2024 and 2023, respectively. Retainage receivables as of the beginning of the prior year period, or January 1, 2023, were $1.6 million. Retainage receivables on contracts in progress are generally collected within a year or two subsequent to contract completion, and are recorded in either "Accounts receivable, net" or "Deferred charges and other assets" within the Consolidated Balance Sheets depending on timing of expected collection.

Provision for credit losses was $0.3 million, $1.6 million and $1.3 million during 2024, 2023 and 2022, respectively, while accounts charged to (recovered from) the provision were $2.9 million, $(0.6) million and $0.6 million during 2024, 2023 and 2022, respectively.