Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2018

Revenue From Contract With Customer [Abstract]

Summary of Revenue

The following summarizes our revenue by melt type:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017			2018		2017
Net sales:
Specialty alloys	$	58,325		42,511	$		161,048		130,287
Premium alloys (A)		9,152		7,364			33,035		19,967
Conversion services and other sales		1,579		1,012			4,781		2,115
Total net sales	$	69,056		50,887	$		198,864		152,369

(A) Premium alloys represent all vacuum induction melted (VIM) products.