INVESTMENTS - SUMMARY OF REVENUES (Details) - Kaupulehu Developments - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Investment Holdings [Line Items]
Revenues - sale of interest in leasehold land	$ 1,253	$ 0	$ 1,738	$ 0
Fees - included in general and administrative expenses	(153)	0	(212)	0
Sale of interest in leasehold land, net of fees paid	$ 1,100	$ 0	$ 1,526	$ 0