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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Accounts receivable and unbilled, net | $ 298,400 | $ 253,404
Prepaid expenses and other current assets | 49,979 | 52,293
Accounts payable | 31,869 | 33,069
Advanced billings | 559,860 | 462,729
Other current liabilities | $ 40,441 | $ 47,547
Preferred stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Preferred stock authorized (in shares) | 5,000,000 | 5,000,000
Preferred stock issued (in shares) | 0 | 0
Preferred stock outstanding (in shares) | 0 | 0
Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Common stock authorized (in shares) | 250,000,000 | 250,000,000
Common stock issued (in shares) | 30,752,292 | 31,091,694
Common stock outstanding (in shares) | 30,752,292 | 31,091,694
Treasury stock (in shares) | 70,573 | 71,573
Related Party |  |
Accounts receivable and unbilled, net | $ 2,400 | $ 7,700
Prepaid expenses and other current assets | 300 |
Accounts payable | 3,100 | 300
Advanced billings | $ 10,100 | 8,800
Other current liabilities |  | $ 12,500

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