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Debt (Schedule Of Debt) (Details) - USD ($)	Jun. 30, 2022	Dec. 31, 2021	Mar. 02, 2020
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ (2,560,000)	$ (3,040,000)
Finance lease liabilities	6,511,000	8,037,000
Total debt	260,639,000	261,685,000
Less: current maturities	15,635,000	16,235,000
Total long-term debt	245,004,000	245,450,000
2020 Term Loan
Debt Instrument [Line Items]
Term loan	$ 256,688,000	$ 256,688,000	$ 300,000,000

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Amount of short-term and long-term debt and lease obligation.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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