Note D - Income Taxes (Tables)

12 Months Ended

Sep. 30, 2019

Notes Tables

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	September 30,			September 30,			September 30,
	2019			2018			2017
Current:
Federal	$	1,260,552		$	1,472,512		$	1,627,125
State		103,130			120,034			78,552
Current income tax expense		1,363,682			1,592,546			1,705,677
Deferred:
Federal		(38,534	)		(463,798	)		8,680
State		35,289			124,657			23,617
Deferred income tax expense		(3,245	)		(339,141	)		32,297
Income tax expense	$	1,360,437		$	1,253,405		$	1,737,974

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	September 30,			September 30,			September 30,
	2019			2018			2017
Federal statutory rate		21	%		24	%		34	%
Federal rate change		-			(5	%)		-
State income taxes		2	%		2	%		1	%
Permanent differences		-			-			(1	%)
Change in valuation allowance		(1	%)		(3	%)		(4	%)
Expiration and utilization of state NOL’s		2	%		4	%		3	%
Research and development credits		(2	%)		(1	%)		(1	%)
Excess tax expense (benefits) from stock-based compensation		1	%		2	%		(1	%)
Tax rate		23	%		23	%		31	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	September 30,			September 30,
	2019			2018
Deferred income tax assets (liabilities):
Intangibles	$	(75,190	)	$	(70,467	)
Property and equipment depreciation		(521,586	)		(552,119	)
Net operating loss carry forwards and credits		377,505			464,274
Stock-based compensation		114,118			151,558
Inventories		350,197			400,111
Prepaid expenses		(63,252	)		(60,806	)
Accrued expenses and reserves		371,414			250,787
Goodwill		(607,882	)		(583,415	)
Gross deferred tax liability		(54,676	)		(77	)
Valuation allowance		(47,014	)		(104,858	)
Net deferred tax liability	$	(101,690	)	$	(104,935	)

Summary of Valuation Allowance [Table Text Block]

Year Ended	Balance at Beginning of Year		Income Tax Expense (Benefit)			Reversal for State NOL Expiration and Utilization			Balance at End of Year
September 30, 2019	$	104,858	$	10,448		$	(68,292	)	$	47,014
September 30, 2018		159,154		79,377			(133,673	)		104,858
September 30, 2017		322,404		(32,154	)		(131,096	)		159,154