Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating activities
Net loss	$ (9,821)	$ (65,323)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation, depletion and amortization	16,737	24,581
Amortization related to long-term debt (see Note 15)	652	2,314
Gain on sale of discontinued operations (see Note 3)	(6,234)	0
Gain on sales of property and equipment, net	(598)	(2,554)
Deferred income taxes	2,545	0
Stock-based compensation	2,614	1,065
Equity in net (income) loss from unconsolidated joint ventures	3,627	(418)
Net income from affiliates	(1,289)	(1,808)
Other non-cash adjustments	(299)	(573)
Changes in assets and liabilities:
Deposit/insurance receivable for legal settlement (see Note 18)	0	(63,000)
Receivables	85,957	123,749
Contract assets, net	(72,632)	(33,432)
Inventories	(13,805)	(4,249)
Contributions to unconsolidated construction joint ventures	(12,840)	(22,180)
Distributions from unconsolidated construction joint ventures and affiliates	250	1,684
Other assets, net	1,264	(21,116)
Accounts payable	(44,028)	(49,399)
Accrual for legal settlement (see Note 18)	0	129,000
Accrued expenses and other liabilities, net	(2,280)	19,746
Net cash provided by (used in) operating activities	(50,180)	38,087
Investing activities
Purchases of marketable securities	(19,940)	(5,000)
Purchases of property and equipment	(31,269)	(18,777)
Proceeds from sales of property and equipment	2,483	3,004
Proceeds from the sale of discontinued operations (see Note 3)	142,571	0
Issuance of notes receivable	(4,560)	0
Collection of notes receivable	111	4,470
Net cash provided by (used in) investing activities	89,396	(16,303)
Financing activities
Debt principal repayments	(63,059)	(2,150)
Cash dividends paid	(5,959)	(5,937)
Repurchases of common stock	(20,212)	(2,299)
Contributions from non-controlling partners	6,325	8,361
Distributions to non-controlling partners	0	(2,902)
Other financing activities, net	1	(65)
Net cash used in financing activities	(82,904)	(4,992)
Net increase (decrease) in cash, cash equivalents and restricted cash	(43,688)	16,792
Cash, cash equivalents and $1,512 in restricted cash at beginning of each period	413,655	437,648
Cash, cash equivalents and $1,512 in restricted cash at end of each period	369,967	454,440
Less: Cash, cash equivalents and $1,512 in restricted cash included in current assets held-for-sale at end of each period	9,056	13,607
Cash and cash equivalents of continuing operations at end of period	360,911	440,833
Supplementary Information
Right of use assets obtained in exchange for lease obligations	3,502	603
Cash paid for operating lease liabilities	5,862	5,457
Cash paid during the period for:
Interest	2,090	2,544
Income taxes	2	148
Non-cash investing and financing activities:
RSUs issued, net of forfeitures	6,606	(133)
Dividends declared but not paid	5,897	5,953
Accrued equipment purchases	$ 5,511	$ 2,443