Accrued Expenses and Other Current Liabilities (Schedule of Restructuring and Related Costs) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2013
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 1,317
Expense - charged to accrual	1,953	$ 1,776
Payments and accrual adjustments	(1,822)	(1,060)
Ending Balance	1,448	601
Severance-related accruals [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	1,317
Expense - charged to accrual	1,216	1,776
Payments and accrual adjustments	(1,423)	(982)
Ending Balance	1,110	523
Restructuring-related accruals [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	0
Expense - charged to accrual	737	0
Payments and accrual adjustments	(399)	(78)
Ending Balance	$ 338	$ 78