Income Taxes (Details) (USD $)	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Income Tax Disclosure [Abstract]
Valuation allowance	$ 534,000	$ 354,000
Income tax penalties and interest accrued	600,000	600,000
Discrete income tax (benefit)	1,500,000	700,000
Tax contingencies, state and local			2,300,000
Percentage points that reduced effective tax rate	(14.1)	(4.4)	(22.4)
Effective income tax rate	30.10%	33.30%	15.00%
Accumulated undistributed foreign earnings	22,000,000
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Tax credit carryforward	200,000
Minimum [Member]
Operating Loss Carryforwards [Line Items]
Estimated unrecognized deferred tax liability	2,500,000
Maximum [Member]
Operating Loss Carryforwards [Line Items]
Estimated unrecognized deferred tax liability	$ 3,500,000