Long-Term Debt (Schedule of Interest Costs) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Long-Term Debt [Abstract]
Interest expense	$ 354	$ 502	$ 1,290	$ 1,572
Interest capitalized	24	25	62	90
Total interest cost	$ 378	$ 527	$ 1,352	$ 1,662