Acquisition (Schedule Of Intangible Assets Other Than Goodwill Acquired) (Details) - Barnes Acquisition [Member] - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Schedule Of Intangible Assets Other Than Goodwill [Line Items]
Intangibles subject to amortization, Weighted Average Useful Life	10 years
Intangibles acquired		$ 13,100
Trademarks [Member]
Schedule Of Intangible Assets Other Than Goodwill [Line Items]
Intangibles not subject to amortization		5,600
Customer Relationships [Member]
Schedule Of Intangible Assets Other Than Goodwill [Line Items]
Intangibles subject to amortization		5,700
Intangibles subject to amortization, Weighted Average Useful Life	10 years
Product Technologies [Member]
Schedule Of Intangible Assets Other Than Goodwill [Line Items]
Intangibles subject to amortization		$ 1,800