Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	0 Months Ended
	Dec. 31, 2014	Jan. 01, 2015
Income Tax Disclosure [Abstract]
Unrecognized income tax benefit, if recognized, would benefit effective tax rate	0.9
Unrecognized income tax benefit related accrued interest and penalties	0.03
Subsequent Event
Income Tax Disclosure [Abstract]
Net operating loss carryforward		6.1
Federal
Income Tax Disclosure [Abstract]
Number of years for examination	Four
New York
Income Tax Disclosure [Abstract]
Number of years for examination	Four
Connecticut
Income Tax Disclosure [Abstract]
Number of years for examination	Four
Pennsylvania
Income Tax Disclosure [Abstract]
Number of years for examination	Four
New Jersey
Income Tax Disclosure [Abstract]
Number of years for examination	Five
Minimum | Subsequent Event
Income Tax Disclosure [Abstract]
Annual limitation of federal NOLs		1.0
Expiration date of net operating loss carryforward		Dec. 31, 2018
Maximum | Subsequent Event
Income Tax Disclosure [Abstract]
Annual limitation of federal NOLs		$ 2.2
Expiration date of net operating loss carryforward		Dec. 31, 2024