NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - SUMMARY OF PROPERTY AND EQUIPMENT (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 30, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 3,186	$ 2,761
Less: accumulated depreciation and amortization	(2,573)	(2,321)
Total property and equipment, net	613	440
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,801	1,492
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	257	248
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,128	$ 1,021