Consolidated Statements of Cash Flows (Tables)

12 Months Ended

Dec. 31, 2021

Supplemental Cash Flow Elements [Abstract]

Changes in Other Components of Working Capital

Below are the changes in other components of working capital, net of balances related to incremental interest acquired in a Civil segment joint venture during 2019 (see Note 6), as shown in the Consolidated Statements of Cash Flows, as well as the supplemental disclosures of cash paid for interest, income taxes and non-cash investing activities:

	Year Ended December 31,
(in thousands)	2021		2020		2019
(Increase) Decrease in:
Accounts receivable	$	(31,972)	$	(104,901)	$	(81,983)
Retainage receivable	78,618		(85,769)		(78,520)
Costs and estimated earnings in excess of billings	(120,034)		(113,190)		18,751
Other current assets	62,371		(49,468)		(76,146)
(Decrease) Increase in:
Accounts payable	(283,482)		111,912		53,999
Retainage payable	(46,190)		62,954		35,013
Billings in excess of costs and estimated earnings	(77,533)		(5,168)		245,292
Accrued expenses and other current liabilities	(4,005)		13,654		14,851
Changes in other components of working capital	$	(422,227)	$	(169,976)	$	131,257
Supplemental disclosures:
Interest paid	$	63,762	$	57,038	$	56,137
Income taxes paid (refunded), net	$	(8,299)	$	11,204	$	43,374
Non-cash investing activities:
Real property acquired in settlement of a receivable	$	—	$	11,660	$	—
Receivable recognized from sale of subsidiary	$	4,163	$	—	$	—