Equity Incentive Plans (Summary Of Nonvested Share Activity) (Details) - USD ($) | 3 Months Ended | | | |
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | 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 | 609,228 | | | | |
Number of Shares, Granted | 290,271 | | | | |
Number of Shares, Vested | (284,885) | | | | |
Number of Shares, Outstanding at September 30, 2023 | 614,614 | | | | |
Weighted Average Grant Date Fair Value, Outstanding at December 31, 2022 | $ 44.44 | | | | |
Weighted Average Grant Date Fair Value, Granted | 41.96 | | | | |
Weighted Average Grant Date Fair Value, Vested | 45.47 | | | | |
Weighted Average Grant Date Fair Value, Outstanding at September 30, 2023 | $ 42.79 | | | | |
Weighted Average Life Remaining, Outstanding at September 30, 2023 (in years) | 1 year 7 months 9 days | | | | |
Fair value of non-vested shares | $ 13,700,000 | $ 8,300,000 | | | |
Unamortized share-based compensation expense | 14,700,000 | | | | |
Severance Costs | $ 1,836,000 | 0 | | | |
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) | 905,470 | | | | |
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 | $ 1,800,000 | 1,900,000 | | | |
Severance Costs | $ 700,000 | 0 | | | |
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 | 312,641 | | | | |
Number of Shares, Granted | 116,266 | | | | |
Number of Shares, Vested | (102,438) | | | | |
Number of Shares, Outstanding at September 30, 2023 | 326,469 | | | | |
Weighted Average Grant Date Fair Value, Outstanding at December 31, 2022 | $ 70.04 | | | | |
Weighted Average Grant Date Fair Value, Granted | 44.76 | | | | |
Weighted Average Grant Date Fair Value, Vested | 75.14 | | | | |
Weighted Average Grant Date Fair Value, Outstanding at September 30, 2023 | $ 59.44 | | | | |
Unamortized share-based compensation expense | $ 8,900,000 | | | | |
Share-based Compensation, Performance Measure Percent, Peer TSR | 50% | | | | |
Share-based Compensation, Performance Measure Percent, MSCI US REIT Index TSR | 25% | | | | |
Share-based Compensation, Performance Measure Percent, Growth in AFFO per share | 25% | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum | 4.50% | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate | 30% | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term | 3 years | | | | |
Dividend, Share-based Payment Arrangement | $ 598,000 | 353,000 | | | |
Share-based Payment Arrangement, Expense | 1,500,000 | 2,000,000 | | | |
Severance Costs | $ 900,000 | | | | |
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] | 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 | $ 4,100,000 | $ 5,900,000 | | | |
Performance Shares [Member] | Market Condition | Granted in 2021 | | | | | |
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 | 250% | | | | |
Performance Shares [Member] | Performance Condition | Granted in 2021 | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] | | | | | |
Fair value of non-vested shares | $ 12,600,000 | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | 200% | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period | 243,290 | | | | |
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] | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | 200% | | | | |
Share-based Compensation Arrangement, Equity Instruments Other Than Options, Performance Condition, Nonvested, Grant Date Fair Value | | | | $ 2,300,000 | |
Performance Shares [Member] | Performance Condition | Granted in 2023 | | | | | |
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 | 52.30% | | | | |
Share-based Compensation Arrangement, Equity Instruments Other Than Options, Performance Condition, Nonvested, Grant Date Fair Value | | | $ 600,000 | | |
Dividend Paid | Performance Condition | Granted in 2021 | | | | | |
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 | 49,574 | | | | |