Long-Term Debt (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Debt Instrument [Line Items]
Interest paid	$ 2.8	$ 1.4	$ 7.5	$ 3.8
Senior Secured Bank Credit Agreement
Debt Instrument [Line Items]
Commitment fee percentage			0.50%
Amount of letter of credit posted as security	10.4		$ 10.4
Borrowing base	$ 75.0		$ 75.0
Senior Secured Bank Credit Agreement | Weighted Average
Debt Instrument [Line Items]
Weighted average interest rate			8.20%