Derivative Financial Instruments (Summary Of Location And Amounts Of Derivative Fair Values In The Consolidated Balance Sheets) (Details) - Non-hedging derivatives - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Derivative [Line Items]
Derivatives	$ 817	$ 162
Option contracts \| Other liabilities
Derivative [Line Items]
Derivatives	$ 817	$ 162

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant