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Equity Incentive Plans (Summary Of Nonvested Share Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | May 06, 2025 | Dec. 31, 2023 | May 12, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |  |  |
Number of Shares, Outstanding at December 31, 2022 | 614,614 |  |  |  |
Number of Shares, Granted | 283,494 |  |  |  |
Number of Shares, Vested | (265,675) |  |  |  |
Number of Shares, Outstanding at September 30, 2023 | 632,433 |  |  |  |
Weighted Average Grant Date Fair Value, Outstanding at December 31, 2022 | $ 42.79 |  |  |  |
Weighted Average Grant Date Fair Value, Granted | 50.21 |  |  |  |
Weighted Average Grant Date Fair Value, Vested | 43.37 |  |  |  |
Weighted Average Grant Date Fair Value, Outstanding at September 30, 2023 | $ 45.87 |  |  |  |
Weighted Average Life Remaining, Outstanding at September 30, 2023 (in years) | 1 year 6 months 25 days |  |  |  |
Fair value of non-vested shares | $ 11,800 | $ 13,700 |  |  |
Unamortized share-based compensation expense | 16,900 |  |  |  |
Severance Costs | $ 0 | 1,836 |  |  |
2016 Equity Incentive Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |  |  |
Common shares, options to purchase common shares and restricted share units, expected to granted (in shares) |  |  |  |  | 3,950,000
Number of shares available for grant (in shares) | 354,667 |  |  |  |
2016 Equity Incentive Plan [Member] | Subsequent Event |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |  |  |
Common shares, options to purchase common shares and restricted share units, expected to granted (in shares) |  |  | 5,950,000 |  |
Number of shares available for grant (in shares) |  |  | 2,354,667 |  |
Restricted Stock [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |  |  |
Share-based Payment Arrangement, Expense | $ 1,900 | 1,800 |  |  |
Severance Costs |  | 700 |  |  |
Performance Shares [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |  |  |
Number of Shares, Outstanding at December 31, 2022 | 326,469 |  |  |  |
Number of Shares, Granted | 113,833 |  |  |  |
Number of Shares, Vested | (98,610) |  |  |  |
Number of Shares, Outstanding at September 30, 2023 | 341,692 |  |  |  |
Weighted Average Grant Date Fair Value, Outstanding at December 31, 2022 | $ 59.44 |  |  |  |
Weighted Average Grant Date Fair Value, Granted | 66.45 |  |  |  |
Weighted Average Grant Date Fair Value, Vested | 72.63 |  |  |  |
Weighted Average Grant Date Fair Value, Outstanding at September 30, 2023 | $ 57.97 |  |  |  |
Unamortized share-based compensation expense | $ 10,700 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum | 4.20% |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate | 25.00% |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term | 3 years |  |  |  |
Share-based Payment Arrangement, Expense | $ 1,400 | 1,500 |  |  |
Severance Costs |  | 900 |  |  |
Performance Shares [Member] | Granted in 2024 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |  |  |
Share-based Compensation, Performance Measure Percent, Peer TSR | 52.20% |  |  |  |
Share-based Compensation, Performance Measure Percent, MSCI US REIT Index TSR | 26.10% |  |  |  |
Share-based Compensation, Performance Measure Percent, Growth in AFFO per share | 21.70% |  |  |  |
Performance Shares [Member] | Granted in 2025 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |  |  |
Share-based Compensation, Performance Measure Percent, Peer TSR | 52.20% |  |  |  |
Share-based Compensation, Performance Measure Percent, MSCI US REIT Index TSR | 26.10% |  |  |  |
Share-based Compensation, Performance Measure Percent, Growth in AFFO per share | 21.70% |  |  |  |
Performance Shares [Member] | Market Condition |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |  |  |
Share Based Compensation Arrangement, Equity Instrument, Other Than Options, Market Condition, Grant Date Fair Value | $ 6,300 | $ 4,100 |  |  |
Performance Shares [Member] | Market Condition | Granted in 2022 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | 200.00% |  |  |  |
Performance Shares [Member] | Performance Condition | Granted in 2022 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |  |  |
Fair value of non-vested shares | $ 12,300 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | 200.00% |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period | 197,220 |  |  |  |
Performance Shares [Member] | Performance Condition | Granted in 2025 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | 119.00% |  |  |  |
Share-based Compensation Arrangement, Equity Instruments Other Than Options, Performance Condition, Nonvested, Grant Date Fair Value |  |  |  | $ 1,500 |
Dividend Equivalents | Performance Condition | Granted in 2022 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period | 51,612 |  |  |  |

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479983/718-10-S45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (e)(1) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(02) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(02) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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