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Share-Based Compensation - Stock Options (Details) - USD ($)	12 Months Ended			192 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2019
2004 plan
Additional disclosures
Granted (in shares)				0
2020 plan
Share-Based Compensation
Number of shares registered	2,072,245
Stock Options
Number of shares
Outstanding at the beginning of the period (in shares)	256,425	176,888	213,866
Assumed stock options and warrants from CSFL merger (in shares)		136,831
Exercised (in shares)	(64,075)	(52,331)	(36,978)
Forfeited (in shares)	(6,250)	(4,963)
Expired (in shares)	(975)
Outstanding at the end of the period (in shares)	185,125	256,425	176,888	176,888
Exercisable at the end of the period (in shares)	185,125	256,425	131,216	131,216
Weighted-Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 59.01	$ 67.14	$ 61.28
Assumed stock options and warrants from CSFL merger (in dollars per share)		37.85
Exercised (in dollars per share)	45.35	32.12	33.26
Expired (in dollars per share)	(24.37)
Forfeited (in dollars per share)	85.42	48.89
Outstanding at the end of the period (in dollars per share)	63.03	59.01	67.14	$ 67.14
Exercisable at the end of the period (in dollars per share)	$ 63.03	$ 59.01	60.12	$ 60.12
Weighted-Average Remaining Contractual Life
Weighted-average fair value of options granted during the year (in dollars per share)			$ 28.01
Aggregate Intrinsic Value
Outstanding at the end of the period	$ 3,800,000	$ 4,600,000	$ 3,700,000	$ 3,700,000
Exercisable at the end of the period	3,800,000	4,600,000	3,600,000	3,600,000
Additional disclosures
Total unrecognized compensation cost related to non vested stock option grants	0	0	720,000	$ 720,000
Intrinsic value of stock option shares exercised	$ 2,300,000	$ 2,000,000.0	$ 1,400,000
Incentive stock options | Maximum
Share-Based Compensation
Vesting period	4 years
Incentive stock options | Plan 2004 and 2012
Share-Based Compensation
Vesting percentage	25.00%
Expiration period	10 years

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