Income Taxes (Tables)

12 Months Ended

Sep. 30, 2016

Income Tax Disclosure [Abstract]

Schedule of components of provision for income taxes

The provision for income taxes was comprised of the following:

	Years Ended September 30,
	2016		2015		2014
Current:
Federal	$	7,790	$	6,516	$	7,797
State	843		973		1,084
Foreign	88		210		213
Total current	8,721		7,699		9,094
Deferred:
Federal	446		220		69
State	100		48		24
Total deferred	546		268		93
	$	9,267	$	7,967	$	9,187

Schedule of differences between income taxes at the statutory federal income tax rate and income taxes reported in the Consolidated Statements of Comprehensive Income

The differences between income taxes at the statutory federal income tax rate and income taxes reported in the Consolidated Statements of Comprehensive Income were as follows:

	Years Ended September 30,
	2016			2015			2014
Federal tax at statutory rate	$	9,774		$	8,133		$	8,777
State taxes, net of federal benefit	613			664			721
Non-deductible expenses	269			192			195
Manufacturing benefit	(847		)	(613		)	(586		)
Credit for increasing research activities	(439		)	(103		)	(30		)
Change in valuation allowance	—			(334		)	163
Other	(103		)	28			(53		)
	$	9,267		$	7,967		$	9,187

Summary of composition of deferred income tax assets and liabilities

A summary of the composition of deferred income tax assets and liabilities was as follows:

	September 30,
	2016			2015
Current Deferred Income Tax Assets and Liabilities
Accounts receivable reserves	$	409		$	370
Inventory valuation adjustments	874			816
Accrued liabilities	(40		)	(19		)
	$	1,243		$	1,167
Non-Current Deferred Income Tax Assets
Goodwill and other intangible assets	$	2,264		$	3,376
Property, plant and equipment	1,725			1,372
Foreign net operating loss carryforwards	2,103			1,881
Foreign tax credit carryforwards	321			184
	6,413			6,813
Less valuation allowance	(2,103		)	(1,881		)
	$	4,310		$	4,932