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Stockholders' Equity - Narrative (Details) |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 22, 2023 shares | Sep. 30, 2023 USD ($) seriesOfPreferredStock quarter director $ / shares shares | Sep. 30, 2022 USD ($) $ / shares shares | Sep. 30, 2023 USD ($) seriesOfPreferredStock quarter director $ / shares shares | Sep. 30, 2022 USD ($) $ / shares shares | Dec. 31, 2022 $ / shares shares | Mar. 31, 2023 USD ($) | Feb. 21, 2023 shares | Feb. 28, 2022 USD ($) | Aug. 10, 2021 USD ($) $ / shares | Nov. 27, 2019 USD ($) | Mar. 29, 2019 USD ($)
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of series of cumulative redeemable preferred stock outstanding | seriesOfPreferredStock |  | 4 |  | 4 |  |  |  |  |  |  |  |
Net income attributable to company's common stockholders | $ |  | $ (94,819,000) | $ (125,770,000) | $ (121,500,000) | $ (292,501,000) |  |  |  |  |  |  |
Redemption price (in dollars per share) | $ / shares |  | $ 25.00 |  | $ 25.00 |  |  |  |  |  |  |  |
Preferred stock redemption period |  |  |  | 120 days |  |  |  |  |  |  |  |
Number of elected directors pending preferred stock voting rights | director |  | 2 |  | 2 |  |  |  |  |  |  |  |
Percent of outstanding shares affirmative votes needed for material and adverse changes to preferred stock terms |  |  |  | 66.67% |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) | 200,000,000 | 200,000,000 |  | 200,000,000 |  | 200,000,000 |  | 800,000,000 |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  | $ 0.01 |  | $ 0.01 |  | $ 0.01 |  |  |  |  |  |
Common stock, shares, issued (in shares) |  | 90,684,441 |  | 90,684,441 |  | 91,193,688 |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  | 90,684,441 |  | 90,684,441 |  | 91,193,688 |  |  |  |  |  |
Reverse stock split (in shares) | 0.25 |  |  |  |  |  |  |  |  |  |  |
Equity Distribution Agreements |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  | $ 0.01 |  |
Common stock that may be sold (up to) | $ |  |  |  |  |  |  |  |  |  | $ 100,000,000 |  |
Shares issued (in shares) |  | 0 | 0 | 0 | 0 |  |  |  |  |  |  |
Common stock reserved for issuance | $ |  | $ 100,000,000 |  | $ 100,000,000 |  |  |  |  |  |  |  |
Equity agreement for preferred stock maximum aggregate sales price (up to) | $ |  |  |  |  |  |  |  |  |  | $ 149,100,000 | $ 131,500,000 |
Preferred Equity Distribution Agreement |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares issued (in shares) |  | 0 | 0 | 0 | 0 |  |  |  |  |  |  |
Equity agreement for preferred stock maximum aggregate sales price (up to) | $ |  |  |  |  |  |  |  |  |  |  |  | $ 50,000,000
Preferred stock available for future issuance, value | $ |  | $ 100,000,000 |  | $ 100,000,000 |  |  |  |  |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares authorized (in shares) |  | 200,000,000 |  | 200,000,000 |  | 200,000,000 |  |  |  |  |  |
Preferred stock, par value (in dollars per share) | $ / shares |  | $ 0.01 |  | $ 0.01 |  | $ 0.01 |  |  |  |  |  |
Preferred stock, shares outstanding (in shares) |  | 22,164,414 |  | 22,164,414 |  | 22,284,994 |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  | 22,164,414 |  | 22,164,414 |  | 22,284,994 |  |  |  |  |  |
Common stock repurchases | $ |  | $ 1,413,000 |  | $ 2,439,000 |  |  |  |  |  |  |  |
Number of quarters with no dividends that results in voting rights | quarter |  | 6 |  | 6 |  |  |  |  |  |  |  |
Preferred Stock | Stock Repurchase Plan |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount | $ |  |  |  |  |  |  | $ 100,000,000 |  |  |  |  |
Average cost per share (in dollars per share) | $ / shares |  | $ 22.23 |  | $ 20.29 |  |  |  |  |  |  |  |
Net income attributable to company's common stockholders | $ |  | $ 100,000 |  | $ 500,000 |  |  |  |  |  |  |  |
Remaining authorized repurchase amount | $ |  | $ 97,600,000 |  | $ 97,600,000 |  |  |  |  |  |  |  |
Series D |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares authorized (in shares) |  | 8,400,000 |  | 8,400,000 |  | 8,400,000 |  |  |  |  |  |
Preferred stock, shares outstanding (in shares) |  | 6,107,318 |  | 6,107,318 |  | 6,123,495 |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  | 6,107,318 |  | 6,107,318 |  | 6,123,495 |  |  |  |  |  |
Preferred stock, contractual rate, percentage |  |  |  | 8.00% |  | 8.00% |  |  |  |  |  |
Series D | Stock Repurchase Plan |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares repurchased (in shares) |  |  |  | 16,177 |  |  |  |  |  |  |  |
Series E |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares authorized (in shares) |  | 9,900,000 |  | 9,900,000 |  | 9,900,000 |  |  |  |  |  |
Preferred stock, shares outstanding (in shares) |  | 7,343,151 |  | 7,343,151 |  | 7,411,499 |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  | 7,343,151 |  | 7,343,151 |  | 7,411,499 |  |  |  |  |  |
Preferred stock, contractual rate, percentage |  |  |  | 7.875% |  | 7.875% |  |  |  |  |  |
Series E | Stock Repurchase Plan |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares repurchased (in shares) |  | 60,058 |  | 68,348 |  |  |  |  |  |  |  |
Series F |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares authorized (in shares) |  | 7,750,000 |  | 7,750,000 |  | 7,750,000 |  |  |  |  |  |
Preferred stock, shares outstanding (in shares) |  | 5,740,209 |  | 5,740,209 |  | 5,750,000 |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  | 5,740,209 |  | 5,740,209 |  | 5,750,000 |  |  |  |  |  |
Preferred stock, contractual rate, percentage |  |  |  | 6.875% |  | 6.875% |  |  |  |  |  |
Series F | Stock Repurchase Plan |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares repurchased (in shares) |  | 3,000 |  | 9,791 |  |  |  |  |  |  |  |
Series G |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares authorized (in shares) |  | 5,450,000 |  | 5,450,000 |  | 5,450,000 |  |  |  |  |  |
Preferred stock, shares outstanding (in shares) |  | 2,973,736 |  | 2,973,736 |  | 3,000,000 |  |  |  |  |  |
Preferred stock, shares issued (in shares) |  | 2,973,736 |  | 2,973,736 |  | 3,000,000 |  |  |  |  |  |
Preferred stock, contractual rate, percentage |  |  |  | 7.00% |  | 7.00% |  |  |  |  |  |
Series G | Stock Repurchase Plan |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares repurchased (in shares) |  | 482 |  | 26,264 |  |  |  |  |  |  |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares repurchased (in shares) |  |  | 1,367,329 |  | 2,066,035 |  |  |  |  |  |  |
Common stock repurchases | $ |  | $ 5,005,000 | $ 14,314,000 | $ 8,615,000 | $ 21,855,000 |  |  |  |  |  |  |
Average cost per share (in dollars per share) | $ / shares |  |  | $ 10.47 |  | $ 10.58 |  |  |  |  |  |  |
Common Stock | Stock Repurchase Plan |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount | $ |  |  |  |  |  |  | $ 246,000,000 |  | $ 200,000,000 |  |  |
Shares repurchased (in shares) |  | 560,342 |  | 937,850 |  |  |  |  |  |  |  |
Common stock repurchases | $ |  | $ 5,000,000 |  | $ 8,600,000 |  |  |  |  |  |  |  |
Average cost per share (in dollars per share) | $ / shares |  | $ 8.93 |  | $ 9.19 |  |  |  |  |  |  |  |
Remaining authorized repurchase amount | $ |  | $ 193,200,000 |  | $ 193,200,000 |  |  |  |  |  |  |  |

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