Income Taxes - Components of Income Tax Provision (Benefit) (Detail) - USD ($)	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Current:
Federal		$ (10,184)
State	$ 24,266	97,641	$ 131,306	$ 197,881
Total	24,266	87,457	131,306	197,881
Deferred:
Federal	(612,703)	(879,206)	591,917	(661,787)
State	(158,487)	(158,561)	158,822	(117,984)
Total	(771,190)	(1,037,767)	750,739	(779,771)
Income tax provision	$ (746,924)	$ (950,310)	$ 882,045	$ (581,890)

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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