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Other Comprehensive Income (Loss) (The Effect Of The Reclassifications From Other Comprehensive Income (Loss) To Earnings) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Foreign currency translation adjustments, Before Tax $ (159) $ 236 $ (285) $ (210)
Foreign currency translation adjustments, Tax 0 0 0 0
Foreign currency translation adjustments, Net of Tax (159) 236 (285) (210)
Unrealized gains (losses) on available-for-sale securities, Before Tax (31) (58) (156) 203
Unrealized gains (losses) on available-for-sale securities, Tax (6) (12) (32) 43
Unrealized gains (losses) on available-for-sale securities, Net of Tax (25) (46) (124) 160
Total other comprehensive income (loss) before income taxes (190) 178 (441) (7)
Other comprehensive income (loss), Tax (6) (12) (32) 43
Total other comprehensive income (loss) after income taxes $ (184) $ 190 $ (409) $ (50)