Debt (Schedule Of Debt) (Details) - USD ($)	Jun. 30, 2023	Dec. 31, 2022	Mar. 02, 2020
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ (1,600,000)	$ (2,080,000)
Finance lease liabilities	5,640,000	6,459,000
Total debt	246,853,000	247,192,000
Less: current maturities	15,399,000	15,567,000
Total long-term debt	231,454,000	231,625,000
2020 Revolving Credit Facility
Debt Instrument [Line Items]
Borrowings under revolving credit facility	0	0
2020 Term Loan
Debt Instrument [Line Items]
Term loan	$ 242,813,000	$ 242,813,000	$ 300,000,000

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

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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

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

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The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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