STOCK OPTIONS AND WARRANTS - Changes in options outstanding and related prices (Details 1) - Employee Stock Option - Incentive Stock Plan 2005 - $ / shares	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 2.93
Number Outstanding	4,403,234	3,458,905
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	4 years 10 months 24 days
Weighted Average Exercise Price of Options Outstanding	$ 4.08	$ 4.42
Number Exercisable	2,807,492
Exercisable Weighted Average Exercise Price	$ 4.22
Dollar 2.59
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 2.59
Number Outstanding	41,667
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	3 years 6 months
Weighted Average Exercise Price of Options Outstanding	$ 2.59
Number Exercisable	41,667
Exercisable Weighted Average Exercise Price	$ 2.59
Dollar 2.66
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 2.66
Number Outstanding	4,584
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	3 years 6 months 29 days
Weighted Average Exercise Price of Options Outstanding	$ 2.66
Number Exercisable	1,146
Exercisable Weighted Average Exercise Price	$ 2.66
Dollar 2.69
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 2.69
Number Outstanding	83,334
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	3 years 1 month 21 days
Weighted Average Exercise Price of Options Outstanding	$ 2.69
Number Exercisable	83,334
Exercisable Weighted Average Exercise Price	$ 2.69
Dollar 2.78
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 2.78
Number Outstanding	8,750
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	9 years 4 months 13 days
Weighted Average Exercise Price of Options Outstanding	$ 2.78
Number Exercisable	3,125
Exercisable Weighted Average Exercise Price	$ 2.78
Dollar 2.81
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 2.81
Number Outstanding	500,000
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	9 years 7 months 6 days
Weighted Average Exercise Price of Options Outstanding	$ 2.81
Number Exercisable
Exercisable Weighted Average Exercise Price
Dollar 2.85
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 2.85
Number Outstanding	1,667
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	3 years 3 months 22 days
Weighted Average Exercise Price of Options Outstanding	$ 2.85
Number Exercisable	417
Exercisable Weighted Average Exercise Price	$ 2.85
Dollar 2.86
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 2.86
Number Outstanding	690,008
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	7 years 7 months 21 days
Weighted Average Exercise Price of Options Outstanding	$ 2.86
Number Exercisable	690,008
Exercisable Weighted Average Exercise Price	$ 2.86
Dollar 2.96
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 2.96
Number Outstanding	50,000
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	9 years 7 months 6 days
Weighted Average Exercise Price of Options Outstanding	$ 2.96
Number Exercisable
Exercisable Weighted Average Exercise Price
Dollar 2.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 2.99
Number Outstanding	489,523
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	9 years 2 months 23 days
Weighted Average Exercise Price of Options Outstanding	$ 2.99
Number Exercisable
Exercisable Weighted Average Exercise Price
Dollar 3.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 3.00
Number Outstanding	1,000
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	9 years 10 months 24 days
Weighted Average Exercise Price of Options Outstanding	$ 3
Number Exercisable
Exercisable Weighted Average Exercise Price
Dollar 3.06
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 3.06
Number Outstanding	5,000
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	9 years 9 months 7 days
Weighted Average Exercise Price of Options Outstanding	$ 3.06
Number Exercisable
Exercisable Weighted Average Exercise Price
Dollar 3.18
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 3.18
Number Outstanding	2,000
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	9 years 9 months 22 days
Weighted Average Exercise Price of Options Outstanding	$ 3.18
Number Exercisable
Exercisable Weighted Average Exercise Price
Dollar 3.20
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 3.20
Number Outstanding	17,668
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	9 years 11 months 1 day
Weighted Average Exercise Price of Options Outstanding	$ 3.20
Number Exercisable	16,668
Exercisable Weighted Average Exercise Price	$ 3.20
Dollar 3.24
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 3.24
Number Outstanding	5,000
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	9 years 3 months
Weighted Average Exercise Price of Options Outstanding	$ 3.24
Number Exercisable
Exercisable Weighted Average Exercise Price
Dollar 3.45
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 3.45
Number Outstanding	30,000
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	8 years 4 months 17 days
Weighted Average Exercise Price of Options Outstanding	$ 3.45
Number Exercisable	7,500
Exercisable Weighted Average Exercise Price	$ 3.45
Dollar 3.48
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 3.48
Number Outstanding	2,500
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	8 years 11 months 12 days
Weighted Average Exercise Price of Options Outstanding	$ 3.48
Number Exercisable	625
Exercisable Weighted Average Exercise Price	$ 3.48
Dollar 3.51
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 3.51
Number Outstanding	666,667
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	1 year 9 months 11 days
Weighted Average Exercise Price of Options Outstanding	$ 3.51
Number Exercisable	666,667
Exercisable Weighted Average Exercise Price	$ 3.51
Dollar 3.60
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 3.60
Number Outstanding	333,334
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	3 years 9 months
Weighted Average Exercise Price of Options Outstanding	$ 3.60
Number Exercisable	333,334
Exercisable Weighted Average Exercise Price	$ 3.60
Dollar 3.90
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 3.90
Number Outstanding	10,581
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	2 months 5 days
Weighted Average Exercise Price of Options Outstanding	$ 3.90
Number Exercisable	10,581
Exercisable Weighted Average Exercise Price	$ 3.90
Dollar 3.92
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 3.92
Number Outstanding	3,000
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	9 years 1 month 13 days
Weighted Average Exercise Price of Options Outstanding	$ 3.92
Number Exercisable
Exercisable Weighted Average Exercise Price
Dollar 4.08
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 4.08
Number Outstanding	79,500
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	9 months 22 days
Weighted Average Exercise Price of Options Outstanding	$ 4.08
Number Exercisable	79,500
Exercisable Weighted Average Exercise Price	$ 4.08
Dollar 4.20
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 4.20
Number Outstanding	20,834
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	1 year 11 months 23 days
Weighted Average Exercise Price of Options Outstanding	$ 4.20
Number Exercisable	20,834
Exercisable Weighted Average Exercise Price	$ 4.20
Dollar 4.91
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 4.91
Number Outstanding	10,000
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	9 years 4 days
Weighted Average Exercise Price of Options Outstanding	$ 4.91
Number Exercisable	10,000
Exercisable Weighted Average Exercise Price	$ 4.91
Dollar 5.31
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 5.31
Number Outstanding	116,561
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	1 year 6 months 15 days
Weighted Average Exercise Price of Options Outstanding	$ 5.31
Number Exercisable	74,948
Exercisable Weighted Average Exercise Price	$ 5.31
Dollar 5.82
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 5.82
Number Outstanding	946,300
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	2 years 23 days
Weighted Average Exercise Price of Options Outstanding	$ 5.82
Number Exercisable	504,633
Exercisable Weighted Average Exercise Price	$ 5.82
Dollar 6.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 6.00
Number Outstanding	8,334
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	2 years 11 months 19 days
Weighted Average Exercise Price of Options Outstanding	$ 6
Number Exercisable	8,334
Exercisable Weighted Average Exercise Price	$ 6
Dollar 6.60
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 6.60
Number Outstanding	123,338
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	2 years 1 month 28 days
Weighted Average Exercise Price of Options Outstanding	$ 6.60
Number Exercisable	123,338
Exercisable Weighted Average Exercise Price	$ 6.60
Dollar 6.89
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 6.89
Number Outstanding	4,167
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	2 years 6 months 29 days
Weighted Average Exercise Price of Options Outstanding	$ 6.89
Number Exercisable	2,084
Exercisable Weighted Average Exercise Price	$ 6.89
Dollar 6.96
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 6.96
Number Outstanding	4,167
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	2 years 1 month 28 days
Weighted Average Exercise Price of Options Outstanding	$ 6.96
Number Exercisable	2,084
Exercisable Weighted Average Exercise Price	$ 6.96
Dollar 7.02
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 7.02
Number Outstanding	33,334
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	2 years 2 months 1 day
Weighted Average Exercise Price of Options Outstanding	$ 7.02
Number Exercisable	16,666
Exercisable Weighted Average Exercise Price	$ 7.02
Dollar 8.16
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 8.16
Number Outstanding	32,091
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	2 years 6 months
Weighted Average Exercise Price of Options Outstanding	$ 8.16
Number Exercisable	32,091
Exercisable Weighted Average Exercise Price	$ 8.16
Dollar 9.60
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 9.60
Number Outstanding	41,667
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	2 years 4 months 6 days
Weighted Average Exercise Price of Options Outstanding	$ 9.60
Number Exercisable	41,667
Exercisable Weighted Average Exercise Price	$ 9.60
Dollar 10.79
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 10.79
Number Outstanding	34,991
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	1 year 6 months 18 days
Weighted Average Exercise Price of Options Outstanding	$ 10.79
Number Exercisable	34,991
Exercisable Weighted Average Exercise Price	$ 10.79
Dollar 12.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices	$ 12.00
Number Outstanding	1,667
Weighted Average Remaining Contractual Life of Options Outstanding (Years)	1 year 7 months 10 days
Weighted Average Exercise Price of Options Outstanding	$ 12
Number Exercisable	1,250
Exercisable Weighted Average Exercise Price	$ 12