Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net income including noncontrolling interests	$ 46,623	$ 26,041
Adjustments to reconcile net income to net cash used in operating activities
Depreciation and amortization	61,090	69,308
Amortization of debt issue costs	1,302	1,530
(Gain) loss on disposal of property and equipment	(96)	297
Provision for doubtful accounts	(3)	0
Deferred taxes	(2,149)	(4,217)
Foreign currency transaction gains and losses	1,461	2,395
Equity in earnings of unconsolidated joint ventures	(11,211)	(16,958)
Return on investments in unconsolidated joint ventures	19,434	18,132
Stock-based compensation	8,358	11,361
Contributions of treasury stock	26,544	26,518
Changes in assets and liabilities, net of acquisitions and newly consolidated joint ventures:
Accounts receivable	(109,681)	58,146
Contract assets	(17,866)	8,360
Prepaid expenses and other assets	(3,521)	(11,153)
Accounts payable	(8,079)	(34,372)
Accrued expenses and other current liabilities	(7,314)	(97,541)
Contract liabilities	13,360	(5,957)
Income taxes	3,107	(2,402)
Other long-term liabilities	3,977	(11,025)
Net cash provided by operating activities	25,336	38,463
Cash flows from investing activities:
Capital expenditures	(13,588)	(9,171)
Proceeds from sale of property and equipment	251	384
Payments for acquisitions, net of cash acquired	(379,272)	256
Investments in unconsolidated joint ventures	(11,228)	(26,373)
Return of investments in unconsolidated joint ventures	0	727
Proceeds from sales of investments in unconsolidated joint ventures	0	14,335
Net cash used in investing activities	(403,837)	(19,842)
Cash flows from financing activities:
Proceeds from borrowings under credit agreement	347,100	0
Repayments of borrowings under credit agreement	(147,100)	0
Payments for debt costs and credit agreement	0	(1,826)
Payments for acquired warrants	(11,243)	0
Contributions by noncontrolling interests	2,827	872
Distributions to noncontrolling interests	(10,344)	(21,836)
Repurchases of common stock	(15,548)	0
Taxes paid on vested stock	(5,963)	(2,242)
Proceeds from issuance of common stock	2,724	2,773
Net cash provided by (used in) financing activities	162,453	(22,259)
Effect of exchange rate changes	(963)	1,011
Net decrease in cash, cash equivalents, and restricted cash	(217,011)	(2,627)
Cash, cash equivalents and restricted cash:
Beginning of year	343,883	487,215
End of period	$ 126,872	$ 484,588