Income Taxes - Additional Information (Detail) - USD ($)		12 Months Ended
	Jan. 01, 2017	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Increase in net valuation allowance		$ 115,000	$ 26,000
Net operating loss carryforward	$ 1,600,000
Annual limitation of federal NOLs	$ 1,000,000
Unrecognized income tax benefits		$ 0
Federal
Income Tax Disclosure [Abstract]
Number of years for examination		4 years
New York
Income Tax Disclosure [Abstract]
Number of years for examination		4 years
Connecticut
Income Tax Disclosure [Abstract]
Number of years for examination		4 years
Pennsylvania
Income Tax Disclosure [Abstract]
Number of years for examination		4 years
New Jersey
Income Tax Disclosure [Abstract]
Number of years for examination		5 years
Minimum
Income Tax Disclosure [Abstract]
Expiration date of net operating loss carryforward	Dec. 31, 2017
Maximum
Income Tax Disclosure [Abstract]
Expiration date of net operating loss carryforward	Dec. 31, 2030