Revenue Recognition (Summary of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation Of Revenue [Line Items]
Net sales	$ 46,196	$ 37,169	$ 145,914	$ 112,709
Specialty Alloys [Member]
Disaggregation Of Revenue [Line Items]
Net sales	37,308	30,973	118,352	92,359
Premium Alloys [Member]
Disaggregation Of Revenue [Line Items]
Net sales	7,986	5,936	25,707	19,383
Conversion Services and Other Sales [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 902	$ 260	$ 1,855	$ 967