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Share-Based Compensation Plans (Schedule of Stock Option Activity) (Details)
 9 Months Ended
Sep. 30, 2025
USD ($)
$ / shares
shares
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Options Outstanding, Beginning Balance | shares 5,242,916
Options Granted | shares 598,432
Options Forfeited | shares (220,891)
Options Expired | shares (478,522)
Options Outstanding, Ending Balance | shares 5,141,935
Options Vested or expected to vest | shares 5,141,935
Options Exercisable | shares 2,670,148
Options Outstanding, Weighted Average Exercise Price, Beginning Balance | $ / shares $ 28.76
Options Granted, Weighted Average Exercise Price | $ / shares 3.22
Options Forfeited, Weighted Average Exercise Price | $ / shares 12.34
Options Expired, Weighted Average Exercise Price | $ / shares 42.76
Options Outstanding, Weighted Average Exercise Price, Ending Balance | $ / shares 25.26
Options Vested or expected to vest, Weighted Average Exercise Price | $ / shares 25.26
Options Exercisable, Weighted Average Exercise Price | $ / shares $ 43.7
Options Outstanding, Weighted Average Remaining Contractual Term 7 years 7 months 17 days
Options Vested or expected to vest, Weighted Average Remaining Contractual Term 7 years 7 months 17 days
Options Exercisable, Weighted Average Remaining Contractual Term 6 years 4 months 2 days
Options Outstanding, Aggregate Intrinsic Value | $ $ 2,426,379
Options Vested or expected to vest, Aggregate Intrinsic Value | $ 2,426,379
Options Exercisable, Aggregate Intrinsic Value | $ $ 211,341