Income Taxes (Details) - USD ($)	12 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Current provision (benefit):
Federal	$ 244,794	$ 77,244	$ (375,936)
State	3,082	(2,930)	(10,146)
Total current provision (benefit)	247,876	74,314	(386,082)
Deferred provision:
Federal		493,989	2,598,050
State	44	27	91,510
Total deferred provision	44	494,016	2,689,560
Total current and deferred provision	$ 247,920	$ 568,330	$ 2,303,478
Reconciliation of the statutory federal rate to the Company's effective income tax rate
U.S. Federal statutory tax rate (as a percent)	34.00%	34.00%	34.00%
State income taxes, net of federal benefit (as a percent)	(0.40%)	0.20%	0.00%
Permanent items (as a percent)	0.20%	(0.20%)	(2.50%)
Research and development tax credits (as a percent)	8.10%	(12.60%)	17.40%
Valuation allowance (as a percent)	(35.90%)	(2.90%)	(110.00%)
Change in unrecognized tax benefits (as a percent)	(0.90%)	(0.10%)	(2.60%)
123R cancellations and forfeitures	0.10%	3.80%	(1.00%)
Effective income tax rate (as a percent)	5.20%	22.20%	(64.70%)

Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) adjustment computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit.

No definition available.