Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2012
Income Tax Disclosure [Line Items]
Net operating loss carryforward	$ 10.6
Unrecognized income tax benefit	0.7
Number of years for examination of federal income tax returns	Four
New York
Income Tax Disclosure [Line Items]
Number of years for examination of federal income tax returns	Four
Connecticut
Income Tax Disclosure [Line Items]
Number of years for examination of federal income tax returns	Four
Pennsylvania
Income Tax Disclosure [Line Items]
Number of years for examination of federal income tax returns	Four
New Jersey
Income Tax Disclosure [Line Items]
Number of years for examination of federal income tax returns	Five
Minimum
Income Tax Disclosure [Line Items]
Annual limitation of federal NOLs	1.0
Expiration date of net operating loss carryforward	2018
Maximum
Income Tax Disclosure [Line Items]
Annual limitation of federal NOLs	$ 2.2
Expiration date of net operating loss carryforward	2024