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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Operating activities:    
Net income $ 161,415 $ 93,392
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, depletion and amortization 113,615 92,283
Amortization related to long-term debt 3,347 3,400
Non-cash loss on debt extinguishment 0 27,552
Gain on sales of property and equipment, net (6,110) (4,347)
Stock-based compensation 36,845 17,325
Equity in net (income) loss from unconsolidated construction joint ventures (5,401) 651
Net income from affiliates (9,738) (12,921)
Other non-cash adjustments 233 (165)
Changes in assets and liabilities:    
Receivables (247,391) (115,321)
Contract assets, net 97,803 (11,799)
Inventories (4,659) (1,367)
Contributions to unconsolidated construction joint ventures (9,163) (3,218)
Distributions from unconsolidated construction joint ventures and affiliates 9,096 28,792
Other assets, net 2,726 14,779
Accounts payable 86,247 104,477
Accrued expenses and other liabilities, net 60,747 50,036
Net cash provided by operating activities 289,612 283,549
Investing activities:    
Purchases of marketable securities (238,371) (6,977)
Maturities of marketable securities 70,415 31,500
Purchases of property and equipment (87,730) (108,167)
Proceeds from sales of property and equipment 10,921 6,739
Issuance of notes receivable (705,278) (122,448)
Cash paid for purchase price adjustments on business acquisition 0 (13,183)
Other investing activities 2,250 1,429
Net cash used in investing activities (947,793) (211,107)
Financing activities:    
Proceeds from long-term debt 610,000 0
Proceeds from issuance of convertible notes 0 373,750
Debt principal repayments (10,831) (310,226)
Capped call transactions 0 (46,046)
Redemption of warrants 0 (497)
Debt issuance costs (2,558) (10,053)
Cash dividends paid (17,030) (17,131)
Repurchases of common stock (21,600) (21,384)
Contributions from non-controlling partners 3,345 20,500
Distributions to non-controlling partners (39,625) (18,072)
Other financing activities, net (46) 1,340
Net cash provided by (used in) financing activities 521,655 (27,819)
Net increase (decrease) in cash and cash equivalents (136,526) 44,623
Cash and cash equivalents at beginning of period 578,330 417,663
Cash and cash equivalents at end of period $ 441,804 $ 462,286