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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Allowance for credit loss | $ (17,017) | $ (12,286)
Common shares, par value (in USD per share) | $ 0.01 | $ 0.01
Common shares, shares authorized (in shares) | 500,000,000 | 325,000,000
Common shares, shares issued (in shares) | 266,769,008 | 251,702,603
Common shares, shares outstanding (in shares) | 266,769,008 | 251,702,603
Mortgages, Senior Notes and Term Loans |  |
Unamortized deferred financing costs, net | $ 11,446 | $ 15,952

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