Accrued Expenses and Other Current Liabilities (Schedule of Restructuring and Related Costs) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Restructuring Reserve [Roll Forward]
Beginning balance	$ 405	$ 780
Expense - charged to accrual	1,358	84
Payments and accrual adjustments	(242)	(459)
Ending balance	1,521	405
Severance-related accruals
Restructuring Reserve [Roll Forward]
Beginning balance	5	180
Expense - charged to accrual	1,128	59
Payments and accrual adjustments	(28)	(234)
Ending balance	1,105	5
Restructuring-related accruals
Restructuring Reserve [Roll Forward]
Beginning balance	400	600
Expense - charged to accrual	230	25
Payments and accrual adjustments	(214)	(225)
Ending balance	$ 416	$ 400