Summary Of Significant Accounting Policies - New Accounting Standards (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Long-term debt	$ 264,075	$ 305,010
Common stock	1,298,740	1,292,479
Retained earnings	323,288	411,072
Allowance for credit losses	2,277	1,477	$ 3,469
Deferred tax liabilities	98,883	86,966
Net interest expense	$ (18,950)	(23,201)	(28,531)
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Retained earnings				$ (600)
Tax effect of credit losses				(200)
Allowance for credit losses				$ 700
Accounting Standards Update 2020-06
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net interest expense		$ (7,600)
Accounting Standards Update 2020-06 | Cumulative Effect, Period of Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Long-term debt			44,100
Common stock			(41,500)
Retained earnings			6,700
Deferred tax liabilities			$ (9,300)