Income Taxes (Components of Benefit from Income Taxes) (Detail) (USD $)	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	$ (5,200,000)
Domestic Tax Expense (Benefit)	(1,455,000)	(16,488,000)
Foreign	4,433,000	7,927,000
Provision (benefit) from income taxes	$ 2,978,000	$ (8,561,000)
Effective tax rate	(5.70%)	27.90%