Common Stock Incentive Plan - Performance Shares Activity (Details)	12 Months Ended
	Dec. 31, 2021 $ / shares shares	Dec. 31, 2020 $ / shares shares	Dec. 31, 2019 $ / shares shares	Nov. 12, 2021
Weighted average price
Conversion ratio				1.002342
Performance shares
Number of shares
Outstanding nonvested shares, beginning of year	291,759	304,663	223,392
Equitable adjustment - Orion Divestiture	752	0	0
Shares granted	257,149	136,729	128,581
Shares vested	(109,113)	(139,012)	(47,310)
Shares forfeited	(52,408)	(10,621)	0
Outstanding nonvested shares, end of each period	388,139	291,759	304,663
Weighted average price
Outstanding nonvested shares, beginning of year (in dollars per share) | $ / shares	$ 69.73	$ 62.25	$ 58.78
Shares granted (in dollars per share) | $ / shares	64.18	79.98	65.34
Shares vested (in dollars per share) | $ / shares	62.52	63.66	54.27
Shares forfeited (in dollars per share) | $ / shares	65.83	66.64
Outstanding nonvested shares, end of each period (in dollars per share) | $ / shares	$ 68.09	$ 69.73	$ 62.25
Performance shares, annual performance grants
Number of shares
Shares granted	194,053
Performance shares, one-time grant
Number of shares
Shares granted	63,096