Share-based Compensation - Activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Stock options
Options Outstanding
Balance at beginning of year (in shares)	115,980	313,480	394,089
Granted (in shares)	217,917	0	0
Lapsed or cancelled (in shares)	0	(197,500)	(80,609)
Balance at end of period (in shares)	333,897	115,980	313,480
Options exercisable at end of period (in shares)	115,980	115,980	313,480
Weighted Average Exercise Price
Balance at beginning of year (in dollars per share)	$ 103.52	$ 97.59	$ 100.56
Granted (in dollars per share)	68.07	0	0
Lapsed or cancelled (in dollars per share)	0	84.14	112.14
Balance at end of period (in dollars per share)	81.63	103.52	97.59
Options exercisable at end of period (in dollars per share)	$ 103.52	$ 103.52	$ 97.59
Restricted Stock Awards
Summary of restricted stock
Balance at beginning of year (in shares)	4,089,174	3,758,174	3,459,363
Granted (in shares)	371,285	337,350	314,995
Cancelled (in shares)	(10,750)	(6,350)	(16,184)
Balance at end of period (in shares)	4,449,709	4,089,174	3,758,174
Vested during the period (in shares)	143,453	147,915	118,255
Compensation expense recorded	$ 10,939,602	$ 7,766,055	$ 10,133,905
Total fair value of restricted stock granted during the year	$ 24,676,422	$ 15,789,540	$ 16,804,931