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Beneficiaries Equity of the Parent Company (Textual) (Details) - USD ($) |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Sep. 10, 2019 | Sep. 30, 2019 | Mar. 31, 2019 | Sep. 30, 2019 | Sep. 30, 2018 | Jan. 03, 2019
Class of Stock [Line Items] |  |  |  |  |  |
Dividends, common stock | $ 33,800,000 |  |  |  |  |
Shares repurchased and retired (in shares) |  |  |  | 1,337,169 |  |
Share price (in dollars per share) |  |  |  | $ 12.92 |  |
Value of stock repurchased and retired |  | $ 0 | $ 17,281,000 | $ 17,300,000 |  |
Maximum |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Share repurchase, authorized amount |  |  |  |  |  | $ 150,000,000.0
Dividend declared |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Dividends payable (in dollars per share) | $ 0.19 |  |  |  |  |
Redeemable Common Limited Partnership Units |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Redeemable common limited partnership units (in shares) |  |  |  | 981,626 | 1,479,799 |

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- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817 + Details
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