Summary Of Significant Accounting Policies (Schedule Of Inventory) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Summary Of Significant Accounting Policies [Abstract]
Finished goods	$ 26,187	$ 35,074
Raw materials	9,753	5,139
Work-in-process	4,253	2,994
Supplies and consumables	20,410	33,820
Total	$ 60,603	$ 77,027

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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