Common Stock Incentive Plan - Shares Activity (Details)	12 Months Ended
	Dec. 31, 2023 $ / shares shares	Dec. 31, 2022 $ / shares shares	Dec. 31, 2021 $ / shares shares	Nov. 12, 2021
Restricted stock units
Number of shares
Outstanding nonvested shares, beginning of year (in shares)	58,513	67,367	18,670
Equitable adjustment - Orion Divestiture (in shares)	0	0	109
Shares granted (in shares)	15,065	24,820	71,956
Shares vested (in shares)	(29,492)	(26,917)	(23,368)
Shares forfeited (in shares)	(1,474)	(6,757)	0
Outstanding nonvested shares, end of each period (in shares)	42,612	58,513	67,367
Weighted average price
Outstanding nonvested shares, beginning of year (in dollars per share) | $ / shares	$ 67.91	$ 69.69	$ 70.38
Shares granted (in dollars per share) | $ / shares	66.41	66.82	68.96
Shares vested (in dollars per share) | $ / shares	70.30	70.55	66.96
Shares forfeited (in dollars per share) | $ / shares	71.02	71.14
Outstanding nonvested shares, end of each period (in dollars per share) | $ / shares	$ 65.62	$ 67.91	$ 69.69
Conversion ratio				1.002342
Performance shares
Number of shares
Outstanding nonvested shares, beginning of year (in shares)	470,880	388,139	291,759
Equitable adjustment - Orion Divestiture (in shares)	0	0	752
Shares granted (in shares)	215,040	174,940	257,149
Shares vested (in shares)	(124,151)	(74,247)	(109,113)
Shares forfeited (in shares)	0	(17,952)	(52,408)
Outstanding nonvested shares, end of each period (in shares)	561,769	470,880	388,139
Weighted average price
Outstanding nonvested shares, beginning of year (in dollars per share) | $ / shares	$ 73.37	$ 68.09	$ 69.73
Shares granted (in dollars per share) | $ / shares	73.32	77.73	64.18
Shares vested (in dollars per share) | $ / shares	76.59	59.62	62.52
Shares forfeited (in dollars per share) | $ / shares	0	58.59	65.83
Outstanding nonvested shares, end of each period (in dollars per share) | $ / shares	$ 72.64	$ 73.37	$ 68.09
Conversion ratio				1.002342