INVESTMENTS - PERCENTAGE OF SALES PAYMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Investment Holdings [Line Items]
Revenues - sale of interest in leasehold land	$ 1,310	$ 0	$ 1,310	$ 1,678
Kaupulehu Developments
Investment Holdings [Line Items]
Revenues - sale of interest in leasehold land	1,310	0	1,310	1,678
Fees - included in general and administrative expenses	(175)	0	(175)	(260)
Proceeds from sale of interest in leasehold land, net of fees paid	$ 1,135	$ 0	$ 1,135	$ 1,418