Income Taxes (Details 3) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Deferred tax assets:
Inventory reserves and UNICAP	$ 20,175	$ 12,851
Accrued expenses and reserves not currently deductible	21,545	21,184
Other comprehensive income	2,343	8,670
R&D tax credit carryforward	1,048
Foreign and state tax credits	54,928	107,460
Foreign and state net operating losses	8,865	8,434
Valuation allowance	(7,984)	(9,543)	$ (14,116)	$ (14,867)
Total deferred income tax assets, net of valuation allowance	100,920	149,056
Deferred tax liabilities:
Depreciation	(40,996)	(50,307)
Intangibles	(623,268)	(656,843)
Prepaid rent	(1,064)	(1,248)
Undistributed foreign earnings	(81,092)	(122,378)
Total deferred income tax liabilities	(746,420)	(830,776)
Total net deferred income tax liabilities	645,500	681,720
Less current deferred income tax assets	(56,194)	(26,242)
Long-term deferred income tax liabilities	$ (701,694)	$ (707,962)