Accrued Expenses and Other Current Liabilities - Schedule of Restructuring and Related Costs (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Restructuring Reserve [Roll Forward]
Beginning balance	$ 601	$ 1,521
Expense - charged to accrual	2,229	723
Payments and accrual adjustments	(1,513)	(1,643)
Ending balance	1,317	601
Severance-related accruals
Restructuring Reserve [Roll Forward]
Beginning balance	523	1,105
Expense - charged to accrual	2,229	723
Payments and accrual adjustments	(1,435)	(1,305)
Ending balance	1,317	523
Restructuring-related accruals
Restructuring Reserve [Roll Forward]
Beginning balance	78	416
Expense - charged to accrual	0	0
Payments and accrual adjustments	(78)	(338)
Ending balance	$ 0	$ 78