Share Incentive Plans, Stock Option Activity (Details) - 2006, 2015 and 2021 Plans [Member] - Stock Options [Member] - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Stock Option Shares [Roll Forward]
Outstanding, beginning balance (in shares)	619,835	711,060
Granted (in shares)	114,827	119,500
Exercised (in shares)	(40,331)	(202,768)
Forfeited (in shares)	(11,117)	(7,957)
Outstanding, ending balance (in shares)	683,214	619,835	711,060
Weighted Average Exercise Price [Abstract]
Outstanding, beginning balance (in dollars per share)	$ 28.51	$ 19.58
Granted (in dollars per share)	30.58	50.93
Exercised (in dollars per share)	12.49	10.22
Forfeited (in dollars per share)	32.6	33.22
Outstanding, ending balance (in dollars per share)	29.74	28.51	$ 19.58
Weighted Average Grant Date Fair Value [Abstract]
Outstanding, beginning balance (in dollars per share)	8.7	6.42
Granted (in dollars per share)	10.34	13.58
Exercised (in dollars per share)	4.08	6.35
Forfeited (in dollars per share)	9.35	9.63
Outstanding, ending balance (in dollars per share)	$ 9.24	$ 8.7	$ 6.42
Intrinsic value of options exercised	$ 0.7	$ 7.9	$ 3.7

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Balance Type:	debit
Period Type:	duration

- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.