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Income Taxes - Operating loss and credit carryforwards (Parenthetical) (Details) | 12 Months Ended
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Dec. 31, 2024
Federal |
Operating loss carryforwards |
Operating loss carryforwards expiration year | 2030
Illinois |
Operating loss carryforwards |
Operating loss carryforwards expiration year | 2031
Other state |
Operating loss carryforwards |
Operating loss carryforwards expiration year | 2036

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