Earnings Per Common Share And Share Awards Summary Of Share-Based Award Transactions (Details) - SARs - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award, SARS, Outstanding [Roll Forward]
Number of shares, outstanding beginning balance			28	42
Number of shares, SARs granted	5	5	5	5
Number of shares, SARS exercised			(7)	(19)
Number of shares, SARS forfeited or expired			(2)
Number of shares, outstanding ending balance	24		24	28	42
Number of shares, exercisable as of September 30, 2025	20		20
Number of shares, unvested as of September 30, 2025	4		4
Share-based Compensation Arrangement by Share-based Payment Award, SARs, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted average exercise price, outstanding beginning balance			$ 154.71	$ 160.83
Weighted average exercise price, SARs granted			246.75	160.94
Weighted average exercise price, SARS exercised			160.62	170.21
Weighted average exercise price, forfeited or expired			146.00
Weighted average exercise price, outstanding ending balance	$ 170.67		170.67	$ 154.71	$ 160.83
Weighted average exercise price, exercisable as of September 30, 2025	164.98		164.98
Weighted average exercise price, unvested as of September 30, 2025	$ 195.21		$ 195.21
Average remaining contractual term, outstanding beginning balance			4 years 1 month 28 days	3 years 10 months 24 days	3 years 8 months 8 days
Average remaining contractual term, outstanding ending balance			4 years 1 month 28 days	3 years 10 months 24 days	3 years 8 months 8 days
Average remaining contractual term, exercisable as of September 30, 2025			3 years 11 months 4 days
Average remaining contractual term, unvested as of September 30, 2025			5 years 1 month 28 days
Aggregate intrinsic value, outstanding beginning balance			$ 2,312	$ 428
Aggregate intrinsic value, outstanding ending balance	$ 2,349		2,349	$ 2,312	$ 428
Aggregate intrinsic value, exercisable as of September 30, 2025	2,018		2,018
Aggregate intrinsic value, unvested as of September 30, 2025	$ 331		$ 331

Share based compensation arrangement by share based payment award, options, unvested, intrinsic value

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- Definition

share based compensation arrangement by share based payment award, options, unvested, number

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No definition available.

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Share based compensation arrangement by share based payment award, options, unvested, weighted average exercise price

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- Definition

Share based compensation arrangement by share based payment award, options, unvested, weighted average remaining contractual term

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No definition available.

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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Weighted average price of options that were either forfeited or expired.

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- Definition

Net number of share options (or share units) granted during the period.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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- Definition

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Weighted average remaining contractual term for option awards outstanding, 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
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- Definition

Number of share options (or share units) exercised during the current period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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