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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Accumulated amortization of deferred leasing costs | $ 35,270 | $ 31,768
Common Shares of beneficial interest, par value (in dollars per share) | $ 0.01 | $ 0.01
Common Shares of beneficial interest, shares authorized (in shares) | 150,000,000 | 150,000,000
Common Shares of beneficial interest, shares issued (in shares) | 112,423,893 | 112,327,533
Common Shares of beneficial interest, shares outstanding (in shares) | 112,423,893 | 112,327,533
Investing Receivables |  |
Investing receivable allowance for credit loss | $ 2,794 | $ 1,599

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- Definition For an unclassified balance sheet, the accumulated amortization, as of the reporting date, which represents the periodic charge to earnings of initial direct costs which have been deferred and are being allocated over the lease term in proportion to the recognition of rental income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 25 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123408481&loc=SL77919138-209958 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 16 -URI https://asc.fasb.org/extlink&oid=123394419&loc=d3e40588-112709 Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 35 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=123394697&loc=d3e40879-112712 + Details
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