Income Taxes (Tables)

12 Months Ended

Sep. 30, 2016

Income Taxes

Schedule of provision for income taxes

The provision for income taxes for the fiscal years 2016, 2015 and 2014 consists of the following (in thousands):

	Fiscal Year Ended September 30,
	2016			2015			2014
Current:
Federal	$	87,088		$	113,023		$	121,418
Foreign		8,795			9,531			9,414
State		13,816			13,686			14,637
Total current portion		109,699			136,240			145,469
Deferred:
Federal		20,915			7,963			(335	)
Foreign		(932	)		(1,461	)		(895	)
State		1,436			655			447
Total deferred portion		21,419			7,157			(783	)
Total provision for income taxes	$	131,118		$	143,397		$	144,686

Schedule of the difference between U.S. statutory federal income tax rate and the effective income tax rate

	Fiscal Year Ended September 30,
	2016			2015			2014
Statutory tax rate		35.0	%		35.0	%		35.0	%
State income taxes, net of federal tax benefit		2.9			2.7			2.7
Effect of foreign operations		(0.4	)		(0.1	)		(0.5	)
Other, net		(0.5	)		0.3			(0.2	)
Effective tax rate		37.0	%		37.9	%		37.0	%

Schedule of the tax effects of temporary differences that give rise to the Company's deferred tax assets and liabilities

The tax effects of temporary differences that give rise to the Company's deferred tax assets and liabilities are as follows (in thousands):

	At September 30,
	2016			2015
Deferred tax assets attributable to:
Share-based compensation expense	$	18,425		$	17,082
Accrued liabilities		32,145			27,949
Inventory adjustments		4,492			3,055
Foreign loss carryforwards		36,419			35,315
Unrecognized tax benefits		532			471
Other		3,225			4,065
Total deferred tax assets		95,238			87,937
Valuation allowance		(36,571	)		(34,965	)
Total deferred tax assets, net		58,667			52,972
Deferred tax liabilities attributable to:
Depreciation and amortization		131,201			103,697
Total deferred tax liabilities		131,201			103,697
Net deferred tax liability	$	72,534		$	50,725

Schedule of changes in the amount of unrecognized tax benefits

The changes in the amount of unrecognized tax benefits are as follows (in thousands):

	Fiscal Year Ended September 30,
	2016			2015
Balance at beginning of the fiscal year	$	2,982		$	2,867
Increases related to prior year tax positions		447			43
Decreases related to prior year tax positions		(18	)		(134	)
Increases related to current year tax positions		275			308
Settlements		(2,261	)		—
Lapse of statute		(130	)		(102	)
Balance at end of fiscal year	$	1,295		$	2,982