Income Taxes (Details 4) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Valuation allowances
NYS investment tax credit carryforwards	$ 2,537	$ 3,807
Foreign loss carryforwards	7,005	10,309
Foreign
Income Taxes
Net operating losses	19,600	30,798
Tax credit carryforwards	104,923	109,959
New York State (NYS) \| Investment tax credit
Income Taxes
Tax credit carryforwards	$ 2,537	$ 3,807

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized.

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The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from tax credit carryforwards for which it is more likely than not that a tax benefit will not be realized.

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