STOCKHOLDERS' EQUITY, Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Thousands						9 Months Ended		12 Months Ended
	Sep. 24, 2018	Jun. 22, 2018	Mar. 21, 2018	Oct. 17, 2017	Oct. 16, 2016	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2018	Sep. 30, 2017	Oct. 16, 2017
Preferred Stock [Abstract]
Preferred stock, par value (in dollars per share)						$ 0.001		$ 0.001
Series A Convertible Preferred Stock [Member]
Preferred Stock [Abstract]
Preferred stock, par value (in dollars per share)						$ 0.001
Convertible preferred stock, shares issued upon conversion (in shares)						1
Cumulative annual cash dividends rate						$ 15
Number of shares repurchased, shares (in shares)	20,000
Number of shares repurchased, value (in shares)	$ 400
Series B Convertible Preferred Stock [Member]
Preferred Stock [Abstract]
Preferred stock, par value (in dollars per share)						$ 0.001
Convertible preferred stock, shares issued upon conversion (in shares)						0.10
Series C Cumulative Preferred Stock [Member]
Preferred Stock [Abstract]
Preferred stock, dividend rate				5.00%	7.00%	5.00%		5.00%	7.00%
Share price (in dollars per share)					$ 10
Increase in dividend rate annually					2.00%	1.00%
Period of increase in dividend rate						4 years
Preferred stock, liquidation preference, value						$ 12,399		$ 11,966
Fair value prior to modification										$ 8,224
Fair value after to modification				$ 6,912
Change in fair value				$ 1,312
Stock issued in private placement (in shares)		2,795	3,000
Stock issued per share (in dollars per share)		$ 500	$ 500
Stock issued in private placement, value		$ 1,398	$ 1,500				$ 2,897
Dividends declared						$ 420	$ 308
Series C Cumulative Preferred Stock [Member] | Minimum [Member]
Preferred Stock [Abstract]
Percentage of change in present value of future cash flows					10.00%
Series C Cumulative Preferred Stock [Member] | Maximum [Member]
Preferred Stock [Abstract]
Preferred stock, dividend rate					13.00%	9.00%