Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2021
Accumulated Other Comprehensive Income [Abstract]
Summary Of Accumulated Other Comprehensive Income	(Dollars in thousands) Foreign‎Currency‎Items(1) Unrealized‎Gain (Losses)‎on Available-‎for-Sale‎Investments Accrued‎Pension‎Service‎Costs(2) Hedge‎Accounting‎Reserve(3) TotalBalance at January 1, 2021 $ 14,966 $ (12) $ (2,135) $ (317) $ 12,502 Change related to derivatives Total change in hedge fair value recorded in Other Comprehensive Income — — — 153 153Amounts reclassified from accumulated other comprehensive income — — — 187 187Net change related to derivatives — — — 340 340 Net current-period other comprehensive income (8,124) (2) 166 340 (7,620)Balance at December 31, 2021 $ 6,842 $ (14) $ (1,969) $ 23 $ 4,882 (1)Net of income tax expense of $36,000.(2)Net of income tax expense of $41,000.(3)Net of income tax expense of $66,000.