STOCK-BASED COMPENSATION, Summary of Stock Options (Details) - USD ($)	6 Months Ended	12 Months Ended
	Mar. 31, 2019	Sep. 30, 2018
Indco's [Member]
Number of Options [Roll Forward]
Outstanding, beginning balance (in shares)	25,321
Granted (in shares)	6,812
Outstanding, ending balance (in shares)	32,133	25,321
Exercisable, ending balance (in shares)	20,825
Weighted Average Exercise Price [Roll Forward]
Outstanding, beginning balance (in dollars per share)	$ 7.97
Granted (in dollars per share)	12.13
Outstanding, ending balance (in dollars per share)	8.85	$ 7.97
Exercisable, ending balance (in dollars per share)	$ 7.08
Weighted Average Remaining Contractual Term [Abstract]
Outstanding	8 years 10 months 24 days	8 years
Granted	12 years 1 month 6 days
Exercisable	7 years 1 month 6 days
Aggregate Intrinsic Value [Abstract]
Outstanding, beginning balance	$ 105,360
Granted	0
Outstanding, ending balance	105,360	$ 105,360
Exercisable, ending balance	$ 105,090
Common stock closing price per share (in dollars per share)	$ 12.13
Total unrecognized compensation expense	$ 70,000
Stock-based compensation	$ 64,000	$ 172,000
Indco's [Member] | Maximum [Member]
Aggregate Intrinsic Value [Abstract]
Weighted-average vesting period	1 year
Employee Option Awards [Member]
Number of Options [Roll Forward]
Outstanding, beginning balance (in shares)	112,798
Granted (in shares)	7,500
Exercised (in shares)	(1,500)
Outstanding, ending balance (in shares)	118,798	112,798
Exercisable, ending balance (in shares)	98,711
Weighted Average Exercise Price [Roll Forward]
Outstanding, beginning balance (in dollars per share)	$ 5.09
Granted (in dollars per share)	7.75
Exercised (in dollars per share)	3.25
Outstanding, ending balance (in dollars per share)	5.28	$ 5.09
Exercisable, ending balance (in dollars per share)	$ 4.73
Weighted Average Remaining Contractual Term [Abstract]
Outstanding	6 years 7 months 6 days	6 years 10 months 24 days
Granted	9 years 6 months
Exercisable	6 years 2 months 12 days
Aggregate Intrinsic Value [Abstract]
Outstanding, beginning balance	$ 357,100
Granted	12,500
Outstanding, ending balance	485,840	$ 357,100
Exercisable, ending balance	$ 458,220
Common stock closing price per share (in dollars per share)	$ 9.37
Total unrecognized compensation expense	$ 48,000
Employee Option Awards [Member] | Maximum [Member]
Aggregate Intrinsic Value [Abstract]
Weighted-average vesting period	1 year
Non-Employee Option [Member]
Number of Options [Roll Forward]
Outstanding, beginning balance (in shares)	51,053
Granted (in shares)	0
Outstanding, ending balance (in shares)	51,053	51,053
Exercisable, ending balance (in shares)	19,036
Weighted Average Exercise Price [Roll Forward]
Outstanding, beginning balance (in dollars per share)	$ 7.58
Granted (in dollars per share)	0
Outstanding, ending balance (in dollars per share)	7.58	$ 7.58
Exercisable, ending balance (in dollars per share)	$ 7.21
Weighted Average Remaining Contractual Term [Abstract]
Outstanding	8 years 3 months 18 days	8 years 9 months 18 days
Granted	0 years
Exercisable	8 years 2 months 12 days
Aggregate Intrinsic Value [Abstract]
Outstanding, beginning balance	$ 31,840
Granted	0
Outstanding, ending balance	91,570	$ 31,840
Exercisable, ending balance	$ 41,100
Common stock closing price per share (in dollars per share)	$ 9.37
Total unrecognized compensation expense	$ 85,000
Non-Employee Option [Member] | Maximum [Member]
Aggregate Intrinsic Value [Abstract]
Weighted-average vesting period	1 year