Revenue Recognition (Summary of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Disaggregation Of Revenue [Line Items]
Net sales	$ 47,562	$ 37,038
Specialty Alloys [Member]
Disaggregation Of Revenue [Line Items]
Net sales	38,220	29,091
Premium Alloys [Member]
Disaggregation Of Revenue [Line Items]
Net sales	8,933	7,553
Conversion Services and Other Sales [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 409	$ 394

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details