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Consolidated Balance Sheets (Parenthetical) (Unaudited) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Cash and cash equivalents | $ 398,178 | $ 483,609
Accounts receivable, net | 693,584 | 698,578
Contract assets | 607,676 | 576,568
Prepaid expenses and other current assets | 101,536 | 80,769
Property and equipment, net | 115,544 | 121,027
Accounts payable | 219,220 | 225,679
Accrued expenses and other current liabilities | 595,058 | 650,753
Contract liabilities | $ 186,028 | $ 201,864
Common stock, par value | $ 1 | $ 1
Common stock, shares authorized | 1,000,000,000 | 1,000,000,000
Common stock, shares, issued | 146,609,288 | 146,609,288
Common stock, shares, outstanding | 26,845,697 | 25,719,350
Treasury stock, shares | 44,248,626 | 44,248,626
ESOP |  |
Common stock, shares, outstanding | 75,560,749 | 76,641,312
Consolidated Joint Ventures |  |
Cash and cash equivalents | $ 52,324 | $ 75,220
Accounts receivable, net | 215,641 | 190,643
Contract assets | 24,539 | 23,498
Prepaid expenses and other current assets | 7,260 | 3,045
Property and equipment, net | 2,528 | 2,629
Accounts payable | 101,593 | 97,810
Accrued expenses and other current liabilities | 75,606 | 68,801
Contract liabilities | $ 35,744 | $ 33,922

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