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Share Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2025
Share-Based Payment Arrangement [Abstract] |
Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] | A summary of changes in the common shares subject to nonvested PBRSUs for the nine months ended September 30, 2025 and 2024 follows. PBRSUs herein represent the maximum number of nonvested PBRSUs. The fair value of the PBRSUs was determined using the quoted price of Park stock on the date of grant.
| Common shares subject to PBRSUs | Weighted-Average Grant-Date Fair Value
Nonvested at January 1, 2024 | 186,936 |  | $ | 122.68 |
Granted | 59,165 |  | 131.30 |
Vested | (58,056) |  | 103.70 |
Forfeited | (2,025) |  | 135.55 |
Adjustment for performance conditions of PBRSUs (1) | — |  | — |
Nonvested at September 30, 2024 | 186,020 |  | $ | 131.20 |
Nonvested at January 1, 2025 | 186,020 |  | $ | 131.20 |
Granted | 49,350 |  | 170.72 |
Vested | (51,833) |  | 119.31 |
Forfeited | (513) |  | 152.68 |
Adjustment for performance conditions of PBRSUs (1) | — |  | — |
Nonvested at September 30, 2025 (2) | 183,024 |  | $ | 145.17 |
Share-based Compensation Arrangements by Share-based Payment Award, Performance-Based Units, Vested and Expected to Vest | A summary of awards vested during the three months and nine months ended September 30, 2025 and 2024 follows:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2025 |  | 2024 |  | 2025 |  | 2024
PBRSUs vested |  | — |  | 3,075 |  |  | 51,833 |  | 58,056 |
Common shares withheld to satisfy employee income tax withholding obligations |  | — |  | 958 |  |  | 19,468 |  | 22,895 |
Net common shares issued |  | — |  | 2,117 |  | 32,365 |  | 35,161
Share-based Payment Arrangement, Nonvested Award, Cost [Table Text Block] | The following table details expected additional share-based compensation expense related to PBRSUs outstanding at September 30, 2025:
(In thousands) |  |
Three months ending December 31, 2025 |  | $ | 1,740 |
2026 |  | 5,585 |
2027 |  | 3,662 |
2028 |  | 1,532 |
2029 |  | 242 |
Total |  | $ | 12,761 |

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- Definition Tabular disclosure of number, weighted-average exercise price or conversion ratio, aggregate intrinsic value, and weighted-average remaining contractual term for outstanding performance-based awards that are fully vested and expected to vest. Includes, but is not limited to, unvested awards for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + 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 Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of cost not yet recognized and weighted-average period over which cost is expected to be recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (i) -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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