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SHAREHOLDERS' EQUITY - Narrative (Details) |  |  | 3 Months Ended | 6 Months Ended | 79 Months Ended |  |  |  |  |  |  |  |
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Jul. 18, 2021 | Feb. 04, 2020 USD ($) sales_agent | Sep. 30, 2025 USD ($) $ / shares shares | Sep. 30, 2024 USD ($) $ / shares shares | Sep. 30, 2025 USD ($) $ / shares shares | Sep. 30, 2024 USD ($) $ / shares shares | Sep. 30, 2025 USD ($) $ / shares shares | May 21, 2024 USD ($) | May 20, 2024 USD ($) | Aug. 02, 2022 USD ($) | Aug. 01, 2022 USD ($) | Aug. 31, 2021 USD ($) | Jul. 28, 2021 USD ($) | May 26, 2021 USD ($) | Mar. 04, 2019 USD ($)
Subsidiary or Equity Method Investee [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase authorized amount |  |  |  |  |  |  |  |  |  |  |  | $ 20,000,000 | $ 20,000,000 |  |
Restricted Stock | 2010 Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary or Equity Method Investee [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Right to grant period | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity ATM Program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary or Equity Method Investee [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum consideration threshold |  | $ 100,000,000.0 |  |  |  |  |  | $ 1,000,000,000 | $ 650,000,000 | $ 650,000,000.0 | $ 250,000,000.0 |  |  | $ 250,000,000.0 | $ 50,000,000.0
Number of additional sales agents | sales_agent |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |
Gross sales commission percentage |  | 2.00% |  |  |  |  |  |  |  |  |  |  |  | 1.50% |
Number of shares sold (in shares) | shares |  |  | 1,766,975 | 839,099 | 3,801,892 | 2,338,080 | 36,843,069 |  |  |  |  |  |  |  |
Weighted average price per share (in usd per share) | $ / shares |  |  | $ 22.81 | $ 24.49 | $ 21.58 | $ 25.20 | $ 21.50 |  |  |  |  |  |  |  |
Gross proceeds received |  |  | $ 40,304,000 | $ 20,552,000 | $ 82,028,000 | $ 58,920,000 | $ 792,000,000 |  |  |  |  |  |  |  |
Net proceeds received |  |  | 39,699,000 | $ 20,244,000 | 80,896,000 | $ 58,036,000 | 779,900,000 |  |  |  |  |  |  |  |
Available under the equity ATM program |  |  | $ 208,000,000 |  | $ 208,000,000 |  | $ 208,000,000 |  |  |  |  |  |  |  |

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