Segment Reporting (Tables)

12 Months Ended

Sep. 30, 2017

Segment Reporting

Schedule of revenues from external customers attributable to geographic areas

	Year Ended September 30,
	2015		2016		2017
Net Revenue by Geography:
United States	$	287,722	$	233,612	$	235,500
Europe		110,659		101,853		98,096
China		28,140		13,808		18,997
Other		61,114		57,086		42,616
Net Revenues	$	487,635	$	406,359	$	395,209
Net Revenue by Product Group:
High-temperature resistant alloys	$	370,603	$	329,151	$	320,119
Corrosive-resistant alloys		117,032		77,208		75,090
Net revenues	$	487,635	$	406,359	$	395,209

Schedule of long-lived assets by geographic areas

	September 30,
	2016		2017
Long-lived Assets by Geography:
United States	$	191,915	$	185,413
Europe		6,935		6,879
China		332		264
Total long-lived assets	$	199,182	$	192,556