Debt (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2025	Feb. 28, 2029	Feb. 28, 2028	Aug. 08, 2026	Aug. 08, 2025	Dec. 31, 2024	Dec. 13, 2024	Jul. 30, 2015
Debt Instrument [Line Items]
Document Period End Date	Mar. 31, 2025
Debt issuance costs, net of amortization	$ (2,147,000)					$ (2,355,000)
Line of Credit Facility, Remaining Borrowing Capacity	35,000,000.0
Senior Notes	274,185,000					299,090,000
Letters of Credit Outstanding, Amount	2,600,000					20,000,000
2026 Notes
Debt Instrument [Line Items]
Senior Notes	62,500,000					62,500,000
2027 Notes
Debt Instrument [Line Items]
Senior Notes	37,500,000					37,500,000
2028 Notes
Debt Instrument [Line Items]
Senior Notes	75,000,000					100,000,000
2029 Notes
Debt Instrument [Line Items]
Senior Notes	100,000,000					100,000,000
Senior Notes
Debt Instrument [Line Items]
Debt issuance costs, net of amortization	(815,000)					(910,000)
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity							$ 330,000,000	$ 35,000,000.0
Borrowings on lines of credit	$ 0					$ 0
Forecast [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five		$ 70,000,000	$ 30	$ 50,000,000.0	$ 12,500,000