Debt - Future Payment (Details) (USD $)	9 Months Ended
	Jun. 30, 2013	Sep. 30, 2012
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	$ 1,305
Long-term Debt, Maturities, Repayments of Principal in Year Two	2,526
Long-term Debt, Maturities, Repayments of Principal in Year Three	1,042
Interest Expense, Long-term Debt	(8)
Long-term Debt	4,865	10,480
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	79
Long-term Debt, Maturities, Repayments of Principal in Year Two	26
Interest Expense, Long-term Debt	(8)
Long-term Debt	97	284
Insurance Financing [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	601
Long-term Debt	601	196
Medium-term Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	625
Long-term Debt, Maturities, Repayments of Principal in Year Two	2,500
Long-term Debt, Maturities, Repayments of Principal in Year Three	$ 1,042