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Stockholders' Equity and Noncontrolling Interests - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  | 3 Months Ended | 6 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
May 18, 2022 | Mar. 14, 2022 | Mar. 07, 2022 | Nov. 01, 2021 | Jun. 30, 2022 | Mar. 31, 2022 | Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2022 | Jun. 30, 2022 | Nov. 13, 2020
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Dividend declared per share (in dollars per share) |  |  |  |  | $ 0.14 | $ 0.12 | $ 0.12 | $ 0.12 |  |  |
At-the-market agreement to sell common shares, maximum offer price |  |  |  |  |  |  |  |  |  |  | $ 150,000
Stock repurchase program, authorized amount | $ 250,000 |  |  |  |  |  |  |  |  |  |
Amount remaining authorized for purchase under the stock repurchase program |  |  |  |  | $ 250,000 |  |  |  | $ 250,000 | $ 250,000 |
Number of IROP unites exchanged (in shares) |  |  |  |  | 879,821 |  |  |  | 890,669 |  |
IROP Units outstanding (in shares) |  |  |  |  | 6,091,172 |  |  |  | 6,091,172 | 6,091,172 |
Common Shares |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Conversion of noncontrolling interest to common shares (in shares) |  |  |  |  | 879,821 | 10,848 | 122,155 |  | 890,669 |  |
ATM Program |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares issued (in shares) |  |  |  |  |  |  |  |  |  | 2,000,000 |
Common stock, capital shares reserved for future issuance (in shares) |  |  |  |  | 56,836,000 |  |  |  | 56,836,000 | 56,836,000 |
ATM Program | Forward Contracts |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of shares issued (in shares) |  |  | 1,000,000 | 1,000,000 |  |  |  |  |  |  |
Dividend Declared |  |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Dividend declared per share (in dollars per share) | $ 0.14 | $ 0.12 |  |  |  |  |  |  |  |  |

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