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Short-term debt and current portion of long-term debt (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Short Term Debt And Current Portion Of Long Term Debt [Abstract]
Accrued interest on long-term debt	$ 270	$ 270
Other short-term debt	177	208
Short-term debt and current portion of long-term debt	$ 447	$ 478

Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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