Income Taxes (Tables)

12 Months Ended

Sep. 30, 2013

Income Tax Disclosure [Abstract]

Earnings Before Income Taxes, and Related Provision for Income Taxes

(a) Earnings before income taxes, and the related provision for income taxes for the years ended September 30, 2013, 2012 and 2011 were as follows:

Year Ended September 30,	2013			2012			2011
Domestic	$	53,963		$	44,774		$	37,955
Foreign		3,399			4,942			2,545
Total earnings before income taxes	$	57,362		$	49,716		$	40,500
Provision (credit) for income taxes—
Federal—
Current	$	18,311		$	15,077		$	13,336
Temporary differences
Fixed asset basis differences and depreciation		121			2			(155	)
Intangible asset basis differences and amortization		(339	)		(354	)		(312	)
Currently non-deductible expenses and reserves		(425	)		(397	)		(627	)
Stock-based compensation		(282	)		(599	)		(706	)
Tax credit carryforwards		(717	)		—			—
Other, net		43			74			35
Subtotal		16,712			13,803			11,571
State and local		2,013			1,521			1,213
Foreign		605			1,021			885
Total income tax provision	$	19,330		$	16,345		$	13,669

Reconciliation Between the Statutory U.S. Income Tax Rate and Effective Rate Derived by Dividing the Provision for Income Taxes by Earnings Before Income Taxes

(b) The following is a reconciliation between the statutory U.S. income tax rate and the effective rate derived by dividing the provision for income taxes by earnings before income taxes:

Year Ended September 30,	2013					2012					2011
Computed income taxes at statutory rate	$	20,078		35.0	%	$	17,398		35.0	%	$	14,175		35.0	%
Increase (decrease) in taxes resulting from—
State and local income taxes		1,270		2.2			994		2.0			834		2.1
Net benefit on foreign dividend		(84	)	(0.2	)		(373	)	(0.8	)		—		—
Qualified domestic production incentives		(1,621	)	(2.8	)		(1,226	)	(2.5	)		(1,025	)	(2.5	)
Uncertain tax position activity		(80	)	(0.1	)		(71	)	(0.1	)		(397	)	(1.0	)
Other, net		(233	)	(0.4	)		(377	)	(0.7	)		82		0.2
	$	19,330		33.7	%	$	16,345		32.9	%	$	13,669		33.8	%

Components of Net Deferred Tax Assets

(c) The components of net deferred tax assets were as follows:

As of September 30,	2013			2012
Deferred tax assets—
Valuation reserves and non-deductible expenses	$	1,784		$	1,575
Stock compensation expense not deductible		3,381			3,067
Net operating loss carryforwards		734			765
Tax credit carryforwards		717			—
Inventory basis differences		1,626			1,376
Other		33			—
Subtotal		8,275			6,783
Less valuation allowance		(296	)		(450	)
Deferred tax assets		7,979			6,333
Deferred tax liabilities—
Fixed asset basis differences and depreciation		(862	)		(761	)
Intangible asset basis differences and amortization		(1,924	)		(2,508	)
Other		(225	)		(306	)
Deferred tax liabilities		(3,011	)		(3,575	)
Net deferred tax assets	$	4,968		$	2,758

Unrecognized Tax Benefits

A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows:

	2013			2012
Unrecognized income tax benefits beginning of year	$	471		$	542
Additions for tax positions of prior years		61			159
Reductions for tax positions of prior years		(103	)		—
Tax examination and other settlements		(183	)		—
Expirations of statute of limitations		(38	)		(230	)
Unrecognized income tax benefits at end of year	$	208		$	471