Income Taxes (Details) (USD $)	12 Months Ended
	Sep. 30, 2012 Rate	Sep. 30, 2011 Rate	Sep. 30, 2010 Rate
Income Taxes [Abstract]
Valuation Allowance, Deferred Tax Asset, Change in Amount	$ 400,000
Undistributed Earnings of Foreign Subsidiaries	130,700,000	75,700,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	300,000
Operating Loss Carryforwards	2,800,000	1,900,000
Deferred Tax Assets, Valuation Allowance	(4,100,000)	(3,700,000)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	300,000	200,000	0
Income Tax Expense (Benefit), Continuing Operations	4,400,000	22,500,000	6,400,000
Discontinued Operation, Tax Effect of Discontinued Operation	0	100,000	600,000
Income Tax Expense (Benefit), Extraordinary Items	0	0	5,800,000
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax	2,200,000	(300,000)	100,000
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized (Gain) Loss Arising During Period, Tax	(1,000,000)	(1,700,000)	(1,100,000)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	0	600,000	700,000
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation	(200,000)	0	0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	200,000	0
Other Comprehensive Income (Loss), Tax	$ 5,400,000	$ 21,200,000	$ 12,500,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%	35.00%	35.00%