Debt (Details 2) In Thousands, unless otherwise specified	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Sep. 30, 2012 U.S. revolving credit facility	Sep. 30, 2011 U.S. revolving credit facility	Sep. 30, 2012 Haynes International Ltd. USD ($)	Sep. 30, 2012 Haynes International Ltd. GBP (£)	Sep. 30, 2012 Haynes International, S.A.R.L. USD ($)	Sep. 30, 2012 Haynes International, S.A.R.L. EUR (€)	Sep. 30, 2012 Nickel-Contor AG USD ($)	Sep. 30, 2012 Nickel-Contor AG CHF
Debt and long-term obligations
Interest rate (as a percent)			3.25%	3.25%
Other long-term obligations	$ 980	$ 1,348
Total	980	1,348
Total long debt excluding current maturities	980	1,348
Overdraft facility					3,233	2,000	1,552	1,200	532	500
Maturities of long-term debt
2018 and thereafter	980
Total	$ 980	$ 1,348