Income Taxes (Tables)

12 Months Ended

Sep. 30, 2019

Income Taxes

Schedule of components of income taxes

	For the Fiscal Year Ended September 30,
	2019		2018		2017
Current provision (benefit):
Federal	$	—	$	(3,440)	$	244,794
State		1,749		5,239		3,082
Total current provision		1,749		1,799		247,876
Deferred provision
Federal		—		61,799		—
State		56		53		44
Total deferred provision		56		61,852		44
Total current and deferred provision	$	1,805	$	63,651	$	247,920

Schedule of reconciliation of the statutory federal rate to the Company's effective income tax rate

	For the Fiscal Year Ended September 30,
	2019		2018		2017
U.S. Federal statutory tax rate	21.0	%	24.3	%	34.0	%
Rate change due to tax reform	0.0	%	(9.0)	%	—
State income taxes, net of federal benefit	(0.9)	%	1.9	%	(0.4)	%
Permanent items	0.8	%	(0.1)	%	0.2	%
Research and development tax credits	(0.8)	%	1.3	%	8.1	%
Valuation allowance	(20.2)	%	(20.3)	%	(35.9)	%
Change in unrecognized tax benefits	0.2	%	0.9	%	(0.9)	%
123R cancellations and forfeitures	0.0	%	(0.8)	%	0.1	%
Effective income tax rate	0.1	%	(1.8)	%	5.2	%

Schedule of deferred tax assets and liabilities

	As of September 30,
	2019		2018		2017
	Non Current		Non Current		Non Current
Deferred tax assets:
Reserves and accruals	$	690,148	$	730,015	$	1,275,427
Research and development credit		1,331,170		1,318,977		1,236,365
NOL carryforwards -fed/state		2,590,791		2,982,246		1,208,592
Depreciation		(826,724)		(863,796)		(690,774)
Stock options		348,624		345,608		609,016
		4,134,009		4,513,050		3,638,626
Less: Valuation allowance		(3,922,620)		(4,296,553)		(3,568,459)
Total deferred tax assets		211,389		216,497		70,167
Deferred tax liabilities:
Depreciation		(341,040)		(346,091)		(137,909)
Total deferred tax liabilities		(341,040)		(346,091)		(137,909)
Net deferred tax (liability) asset	$	(129,651)	$	(129,594)	$	(67,742)

Schedule of reconciliation of beginning and ending balances of total amounts of gross unrecognized tax benefits

	For the Fiscal Year Ended September 30,
	2019		2018		2017
Balance at beginning of year	$	540,000	$	570,000	$	615,000
Unrecognized tax benefits related to prior years		—		52,000		—
Unrecognized tax benefits related to current year		6,000		11,000		18,000
Decrease in unrecognized tax benefits due to the lapse of applicable statute of limitations		—		(93,000)		(63,000)
Balance at end of year	$	546,000	$	540,000	$	570,000