Income Taxes (Schedule Of Deferred Tax Liabilities And Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred income tax liabilities:
Amortization of goodwill and identifiable intangibles	$ 12,023	$ 13,416
Depreciation	7,065	0
Deferred Tax Liabilities, Undistributed Foreign Earnings	12,361	0
Foreign currency translation gain adjustment	0	300
Deferred Tax Liabilities, Investments	17,504	15,131
Deferred Tax Liabilities, Other	549	184
Total deferred income tax liabilities	50,253	29,031
Deferred Tax Assets, Right-of-Use Assets	751	0
Deferred Tax Assets, Property, Plant and Equipment	0	2,399
Deferred income tax assets:
Pensions	21,025	17,153
Employee benefits	7,964	6,676
Inventory	3,734	3,644
Deffered Tax Assets Write Off Divestitures And Environmental Accruals	1,355	1,200
Excess capital losses	1,551	1,519
Tax benefit on U.S. federal, state and foreign NOL and credit carryforwards	19,658	23,507
Timing adjustment for unrecognized tax benefits on uncertain tax positions, including portion relating to interest and penalties	187	267
Allowance for doubtful accounts	383	382
Deferred Tax Liabilities, Leasing Arrangements	967	0
Derivative financial instruments	345	432
Foreign currency translation gain adjustment	285	0
Deferred income tax assets before valuation allowance	57,454	57,179
Less: Valuation allowance	5,091	24,736
Net deferred income tax (assets) liabilities	2,110	3,412
Deferred Tax Assets, Net, Noncurrent	13,129	3,412
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	52,363	32,443
Pension and other postretirement benefit obligations, net	$ 11,019	$ 0