Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2024

Performance Shares [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Performance Unit Graded Vesting Schedule

The following activity occurred:

		2024		2023
Nonvested awards January 1,		18,779		16,514
Granted		16,414		11,320
Vested		(8,708)		(7,806)
Undistributed vested awards(c)		(3,899)		(1,249)
Forfeitures		(488)		—
Nonvested awards December 31,		22,098		18,779
Weighted average fair value of each nonvested award	$	130.73	$	92.18
Weighted average estimated payout % based on performance criteria		139.1%		127.5%

(c)Represents performance units that vested but were not distributed to retirement-eligible employees.

Restricted Stock Units Equity Awards [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Performance Unit Graded Vesting Schedule

The following activity occurred:

	2024			2023
	Units	Weighted Average Grant Date Fair Value (per share)		Units	Weighted Average Grant Date Fair Value (per share)
Nonvested awards January 1,	33,467	$	71.02	27,370	$	69.28
Granted	29,733		63.19	20,472		69.95
Vested	(14,244)		72.46	(13,126)		65.83
Undistributed vested awards(a)	(6,187)		67.18	(1,249)		69.95
Forfeitures	(488)		63.19	—		—
Nonvested awards December 31,	42,281	$	65.65	33,467	$	71.02

(a)Represents restricted stock units that vested but were not distributed to retirement-eligible employees.

2006 Performance Unit Plan [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Performance Unit Graded Vesting Schedule

The following activity occurred:

	2023
		Performance Unit Plan
Nonvested awards January 1,		2,004
Granted		—
Vested		(2,004)
Nonvested awards December 31,		—

In the first quarter of 2024, cash payments of $1.4 million were distributed related to awards that were granted under the plans in 2019, for the 2006 Performance Unit Plan.