Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net income including noncontrolling interests	$ 35,276	$ 23,843
Adjustments to reconcile net income to net cash used in operating activities
Depreciation and amortization	28,359	30,509
Amortization of debt issue costs	657	649
Gain on disposal of property and equipment	(3)	(39)
Provision for doubtful accounts	0	(3)
Deferred taxes	(2,586)	(2,566)
Foreign currency transaction gains and losses	(290)	882
Equity in losses (earnings) of unconsolidated joint ventures	5,840	(5,598)
Return on investments in unconsolidated joint ventures	7,793	11,874
Stock-based compensation	6,992	3,898
Contributions of treasury stock	14,435	13,054
Changes in assets and liabilities, net of acquisitions and newly consolidated joint ventures:
Accounts receivable	(47,482)	(46,690)
Contract assets	(49,098)	(21,212)
Prepaid expenses and other assets	(27,948)	4,496
Accounts payable	8,009	(39,342)
Accrued expenses and other current liabilities	(10,898)	(4,134)
Contract liabilities	16,113	945
Income taxes	6,408	4,706
Other long-term liabilities	(567)	(986)
Net cash used in operating activities	(8,990)	(25,714)
Cash flows from investing activities:
Capital expenditures	(8,146)	(4,473)
Proceeds from sale of property and equipment	19	112
Investments in unconsolidated joint ventures	(13,016)	(9,713)
Return of investments in unconsolidated joint ventures	0	644
Proceeds from sales of investments in unconsolidated joint ventures	381	0
Net cash used in investing activities	(20,762)	(13,430)
Cash flows from financing activities:
Proceeds from borrowings under credit agreement	5,700	0
Repayments of borrowings under credit agreement	(5,700)	0
Contributions by noncontrolling interests	200	1,226
Distributions to noncontrolling interests	(638)	(8,309)
Repurchases of common stock	(6,000)	(5,548)
Taxes paid on vested stock	(6,064)	(5,771)
Net cash used in financing activities	(12,502)	(18,402)
Effect of exchange rate changes	154	425
Net decrease in cash, cash equivalents, and restricted cash	(42,100)	(57,121)
Cash, cash equivalents and restricted cash:
Beginning of year	262,539	343,883
End of period	$ 220,439	$ 286,762