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Earnings per Common Share - Summary of Potential Common Stock Equivalents Excluded from Determination of Diluted Earnings Per Share (Details) - shares shares in Millions | 3 Months Ended | 6 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Unvested Restricted Stock Awards [Member] |  |  |  |  |
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |  |  |
Anti-dilutive shares excluded from the determination of diluted earnings per share (in shares) |  | 0.3 | 3.2 | 0.3 | 0.8
Series A Preferred Stock [Member] |  |  |  |  |
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] |  |  |  |  |
Anti-dilutive shares excluded from the determination of diluted earnings per share (in shares) | [1] | 44.3 | 46.5 | 44.3 | 46.5
[1] | The Series A Preferred has no mandatory redemption date, but is redeemable at our election for a 10% premium to the liquidation preference on or prior to March 16, 2022 and for a 5% premium to the liquidation preference thereafter. If the Series A Preferred is not redeemed prior to March 16, 2028, the investors have the right to convert the Series A Preferred into TRC common stock.

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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