NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)	12 Months Ended
	Sep. 30, 2016 USD ($) customer shares	Sep. 30, 2015 USD ($) customer shares	Sep. 30, 2014 USD ($) shares
License sales to distributors and resellers as percentage of total revenue	35.00%	40.00%	44.00%
Warranty liabilities	$ 0	$ 0
Depreciation and amortization expense	400,000	300,000	$ 200,000
Conversion gains and (losses) on foreign investments	$ (100,000)	$ (100,000)	(100,000)
Capitalized software development costs			$ 250,000
Number of major customers | customer	0	0
Impairment charge		$ 32,009,000
Goodwill impairment		$ 21,698,000
Antidilutive shares | shares	384,312	259,424	11,059
Foreign currency translation gain	$ 100,000
Foreign currency translation losses		$ 400,000	$ 300,000
Advertising expense	600,000	100,000	800,000
Indemnification Agreement [Member]
Loss liability	0	0
Intellectual Property [Member]
Amortization of intangible assets	$ 2,000,000	2,200,000	2,800,000
Impairment charge		$ 4,900,000
Capitalized Software [Member]
Capitalized software development costs			300,000
Patents [Member]
Useful life	20 years	20 years
Customer Lists [Member]
Useful life	14 years	14 years
Impairment charge		$ 5,400,000
Selling and Marketing [Member]
Amortization of intangible assets	$ 200,000	300,000	600,000
General and Administrative [Member]
Amortization of intangible assets	20,000	48,000	48,000
Interest Expense [Member]
Amortization of intangible assets	$ 0	0	100,000
Software Licenses [Member]
Product warranty period	30 days
Amortization of intangible assets	$ 0	0	$ 600,000
Minimum [Member]
Property and equipment useful lives	3 years
Minimum [Member] | Intellectual Property [Member]
Useful life	5 years
Minimum [Member] | Capitalized Software [Member]
Capitalized computer software amortization period	9 months
Maximum [Member]
Property and equipment useful lives	7 years
Maximum [Member] | Intellectual Property [Member]
Useful life	7 years 6 months
Maximum [Member] | Capitalized Software [Member]
Capitalized computer software amortization period	18 months
Money Market Funds [Member]
Total assets at fair value	$ 18,800,000	$ 25,700,000
Lifeboat Distribution [Member] | Sales Revenue, Net [Member]
Concentration risk, percentage			15.00%