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INVESTMENTS - SALE OF INTEREST IN LEASEHOLD LAND (Details) | 9 Months Ended |
--- | --- | ---
Jun. 30, 2021 USD ($) lot | Mar. 07, 2019 USD ($) day
KD Acquisition II, LP | Investment in land development partnerships |  |
Investment Holdings [Line Items] |  |
Collaborative agreement, percentage of distributions |  | 15.00%
Collaborative agreement, percentage of cumulative net profits, priority payment |  | 10.00%
Collaborative agreement, percentage of cumulative net profits, priority payment, maximum amount |  | $ 3,000,000
KD Acquisition II, LP | KD Kaupulehu, LLLP | Investment in land development partnerships |  |
Investment Holdings [Line Items] |  |
Ownership interest acquired |  | 55.00%
KD Kaupulehu LLLP Increment I | Kaupulehu Developments |  |
Investment Holdings [Line Items] |  |
Aggregate gross proceeds from sale of Increment I single family lots for calculating payments entitled to be received | $ 237,038,000 |
Number of single family lots sold | lot | 8 |
Number of lots remaining to be sold | lot | 9 |
Number of lots developed | lot | 80 |
KD Kaupulehu LLLP Increment II Phase 2A | Investment in land development partnerships |  |
Investment Holdings [Line Items] |  |
Number of single family lots, rights to |  | 3
KD Kaupulehu LLLP Increment II Phase 2A, lots completed subsequent to Phase 2A | Investment in land development partnerships |  |
Investment Holdings [Line Items] |  |
Number of single family lots, rights to |  | 4
Collaborative agreement, commitment to construct improvements, term | day |  | 90
KD Development, LLC | Investment in land development partnerships |  |
Investment Holdings [Line Items] |  |
Collaborative agreement, fees, percentage of cumulative net profits |  | 0.72%
Pool Of Various Individuals | Investment in land development partnerships |  |
Investment Holdings [Line Items] |  |
Collaborative agreement, fees, percentage of cumulative net profits |  | 0.20%
Aggregrate gross procceds greater than $100,000,000 up to $300,000,000 | KD Kaupulehu LLLP Increment I | Kaupulehu Developments |  |
Investment Holdings [Line Items] |  |
Payments entitled to be received as percentage of gross proceeds from sale of single family lots | 10.00% |
Aggregate gross proceeds in excess of $300,000,000 | KD Kaupulehu LLLP Increment I | Kaupulehu Developments |  |
Investment Holdings [Line Items] |  |
Payments entitled to be received as percentage of gross proceeds from sale of single family lots | 14.00% |
Minimum | Aggregrate gross procceds greater than $100,000,000 up to $300,000,000 | KD Kaupulehu LLLP Increment I | Kaupulehu Developments |  |
Investment Holdings [Line Items] |  |
Aggregate gross proceeds from sale of Increment I single family lots for calculating payments entitled to be received | $ 100,000,000 |
Minimum | Aggregate gross proceeds in excess of $300,000,000 | KD Kaupulehu LLLP Increment I | Kaupulehu Developments |  |
Investment Holdings [Line Items] |  |
Aggregate gross proceeds from sale of Increment I single family lots for calculating payments entitled to be received | 300,000,000 |
Maximum | Aggregrate gross procceds greater than $100,000,000 up to $300,000,000 | KD Kaupulehu LLLP Increment I | Kaupulehu Developments |  |
Investment Holdings [Line Items] |  |
Aggregate gross proceeds from sale of Increment I single family lots for calculating payments entitled to be received | $ 300,000,000 |

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