INVESTMENTS - PERCENTAGE OF SALES PAYMENTS (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2016 USD ($) a increment	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) a	Jun. 30, 2015 USD ($)
Investment Holdings [Line Items]
Sale of interest in leasehold land, net	$ 1,502	$ 1,266	$ 1,915	$ 3,115
Kaupulehu Developments
Investment Holdings [Line Items]
Area of land (in acres) | a	870		870
Number of development increments | increment	2
Fees Related to Sale of Interest in Leasehold Land	$ (273)	(207)	$ (340)	(508)
Sale of interest in leasehold land, net	1,502	1,266	1,915	3,115
Percentage of sales payment received	$ 1,775	$ 1,473	$ 2,255	$ 3,623
Land Interest
Investment Holdings [Line Items]
Area of land (in acres) | a	1,000		1,000