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v3.21.1

SUBSEQUENT EVENTS (Details) $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Apr. 18, 2021 USD ($) | Apr. 08, 2021 USD ($) | May 14, 2021 USD ($) lot | Apr. 30, 2021 USD ($) | Mar. 31, 2021 USD ($) | Mar. 31, 2020 USD ($) | Mar. 31, 2021 USD ($) lot | Mar. 31, 2020 USD ($) | Sep. 30, 2020 USD ($)
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Curtailment gain |  |  |  |  | $ 0 | $ 0 | $ 0 | $ 1,699 |
Proceeds from sale of oil and natural gas assets |  |  |  |  |  |  | 0 | 594 |
Income taxes receivable |  |  |  |  | 474 |  | 474 |  | $ 472
Kaupulehu Developments |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Sale of interest in leasehold land |  |  |  |  | $ 0 | $ 0 | $ 485 | 0 |
Kaupulehu Developments | KD Kaupulehu LLLP Increment I |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Number of single family lots sold | lot |  |  |  |  |  |  | 2 |  |
Investment in land development partnerships |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Cash distribution from equity method investment |  |  |  |  |  |  | $ 2,205 | $ 0 |
Subsequent Event | Paycheck Protection Program Loan |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Loan amount forgiven | $ 147 |  |  |  |  |  |  |  |
Subsequent Event | Postretirement Medical |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Curtailment gain |  |  |  | $ 2,000 |  |  |  |  |
Subsequent Event | Kaupulehu Developments | KD Kaupulehu LLLP Increment I |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Sale of interest in leasehold land |  |  | $ 548 |  |  |  |  |  |
Number of single family lots sold | lot |  |  | 3 |  |  |  |  |  |
Subsequent Event | Barnwell Industries Inc | Hillsdown, Alberta, Canada |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from sale of oil and natural gas assets |  | $ 138 |  |  |  |  |  |  |
Income taxes receivable |  | 70 |  |  |  |  |  |  |
Subsequent Event | Barnwell Industries Inc | North Twining, Alberta, Canada |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Payments to acquire oil and natural gas properties |  | $ 340 |  |  |  |  |  |  |
Subsequent Event | Investment in land development partnerships |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Cash distribution from equity method investment |  |  | $ 1,554 |  |  |  |  |  |

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