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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Receivables, reserve | $ 21 | $ 21
Intangible assets, accumulated amortization | 70,045 | 64,112
Property and equipment, accumulated depreciation | $ 122,372 | $ 119,852
Treasury stock, shares (in shares) | 16,905,080 | 14,664,467
Class A |  |
Common stock, no par value (usd per share) | $ 0 | $ 0
Common stock, shares authorized (in shares) | 20,000 | 20,000
Common stock, shares issued (in shares) | 9,000 | 9,000
Common stock, shares outstanding (in shares) | 9,000 | 9,000
Class B |  |
Common stock, no par value (usd per share) | $ 0 | $ 0
Common stock, shares authorized (in shares) | 900,000,000 | 900,000,000
Common stock, shares issued (in shares) | 99,505,456 | 99,505,456
Common stock, shares outstanding (in shares) | 82,600,376 | 84,840,989

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