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Debt (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2017
Preferred stock, shares issued			104,574
Subordination to credit facility, facility total	$ 50.0
Subordination to credit facility, facility maximum net borrowing	$ 40.0
Senior Notes [Member]
Debt instrument interest rate	8.25%
Long-term debt, face amount	$ 74.3	$ 74.3
Long-term debt, current	$ 6.1	$ 6.1

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Face (par) amount of debt instrument at time of issuance.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as current. Excludes lease obligation.

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