Long-Term Debt (Schedule of Interest Costs) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2010
Long-Term Debt [Abstract]
Interest expense	$ 1,616	[1]	$ 2,020	[1]	$ 6,879	[1]
Interest capitalized	100		127		98
Total interest cost	1,716		2,147		6,977
Prepayment penalty					3,094
Recognition of unamortized loan origination fees					$ 305

[1] Interest expense for the year ended September 30, 2010 includes a prepayment penalty of $3,094,000 and $305,000 of loan fees.