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Convertible Subordinated Notes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Mar. 12, 2021
Debt Instrument [Line Items]
Convertible Preferred Stock, Nonredeemable or Redeemable, Issuer Option, Value			$ 2.4
Payments for Repurchase of Redeemable Convertible Preferred Stock, Cash Payment	$ 3.8
Additional Paid-in Capital
Debt Instrument [Line Items]
Adjustments to Additional Paid in Capital, Other	(1.4)
Adjustments to Additional Paid in Capital, Other	$ 1.4
Convertible subordinated notes
Debt Instrument [Line Items]
Debt instrument interest rate (in percent)		2.75%
Long-term Debt			$ 0.2
Interest Rate, Unamortized Debt Discount and Debt Issuance Costs, Effective Percentage	3.10%	3.10%

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