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SHAREHOLDERS' EQUITY - Narrative (Details) |  |  | 3 Months Ended | 6 Months Ended | 43 Months Ended |  |  |  |  |  |
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Feb. 04, 2020 USD ($) sales_agent | Jul. 18, 2011 | Sep. 30, 2022 USD ($) $ / shares shares | Sep. 30, 2021 USD ($) $ / shares shares | Sep. 30, 2022 USD ($) $ / shares shares | Sep. 30, 2021 USD ($) $ / shares shares | Sep. 30, 2022 USD ($) $ / shares shares | Aug. 31, 2022 USD ($) | Aug. 02, 2022 USD ($) | Aug. 01, 2022 USD ($) | Jul. 28, 2021 USD ($) | May 26, 2021 USD ($) | Mar. 04, 2019 USD ($)
Subsidiary or Equity Method Investee [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Right to grant period |  | 10 years |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  |  |  | $ 20,000,000 |  |  | $ 20,000,000 |  |
Equity ATM Program |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary or Equity Method Investee [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum consideration threshold | $ 100,000,000 |  |  |  |  |  |  |  | $ 650,000,000 | $ 250,000,000 |  | $ 250,000,000 | $ 50,000,000
Number of additional sales agents | sales_agent | 2 |  |  |  |  |  |  |  |  |  |  |  |
Gross sales commission percentage |  |  |  |  |  |  |  |  |  |  |  | 1.50% | 2.00%
Number of shares issued in transaction (in shares) | shares |  |  | 1,381,716 | 1,141,269 | 3,644,568 | 2,218,578 | 11,822,228 |  |  |  |  |  |
Weighted-average price per share (in usd per share) | $ / shares |  |  | $ 19.48 | $ 26.59 | $ 20.21 | $ 26.35 | $ 21.75 |  |  |  |  |  |
Gross proceeds from issuance of common stock |  |  | $ 26,900,000 | $ 30,300,000 | $ 73,700,000 | $ 58,500,000 | $ 257,100,000 |  |  |  |  |  |
Net proceeds |  |  | 26,500,000 | $ 29,900,000 | 72,600,000 | $ 57,600,000 | 252,900,000 |  |  |  |  |  |
Available under the Equity ATM Program |  |  | $ 392,900,000 |  | $ 392,900,000 |  | $ 392,900,000 |  |  |  |  |  |
2010 Plan | Restricted Stock |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary or Equity Method Investee [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Right to grant period |  | 10 years |  |  |  |  |  |  |  |  |  |  |

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