Property and Equipment - Property and Equipment (Detail) - USD ($)	Sep. 30, 2015	Sep. 30, 2014
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 25,358,000	$ 24,887,000
Less: Accumulated depreciation and amortization	(18,970,000)	(17,746,000)
Property and equipment, net	6,388,000	7,141,000
Land and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,323,000	3,296,000
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	12,883,000	12,875,000
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 9,152,000	$ 8,716,000