FAIR VALUE MEASUREMENTS (Details) (USD $)	9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Sep. 30, 2011
Fair value measurements
Real estate held for sale	$ 5,208,000		$ 12,640,000
Investments	4,623,000		4,623,000
Total reduction of carrying value of assets	1,854,000	311,000
Investment in residential parcels
Fair value measurements
Investments	2,331,000		2,331,000
Total reduction of carrying value of assets		190,000
Investment in joint ventures
Fair value measurements
Investments	1,754,000		1,754,000
Investment in Kona Village Resort
Fair value measurements
Total reduction of carrying value of assets		121,000
Nonrecurring
Fair value measurements
Total reduction of carrying value of assets	1,854,000
Nonrecurring | Investment in residential parcels
Fair value measurements
Total reduction of carrying value of assets		190,000
Nonrecurring | Investment in joint ventures
Fair value measurements
Total reduction of carrying value of assets		121,000
Nonrecurring | Significant Other Observable Inputs (Level 2)
Fair value measurements
Real estate held for sale	5,208,000
Nonrecurring | Significant Other Observable Inputs (Level 2) | Investment in residential parcels
Fair value measurements
Investments		2,830,000
Nonrecurring | Significant Unobservable Inputs (Level 3) | Investment in joint ventures
Fair value measurements
Investments		1,754,000
Nonrecurring | Carrying Amount
Fair value measurements
Real estate held for sale	5,208,000
Nonrecurring | Carrying Amount | Investment in residential parcels
Fair value measurements
Investments		2,830,000
Nonrecurring | Carrying Amount | Investment in joint ventures
Fair value measurements
Investments		$ 1,754,000