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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 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Foreign currency translation adjustments, Before Tax $ 20 $ 154 $ (127) $ (446)
Foreign currency translation adjustments, Tax 0 0 0 0
Foreign currency translation adjustments, Net of Tax 20 154 (127) (446)
Unrealized gains (losses) on available-for-sale securities, Before Tax (52) 121 (124) 261
Unrealized gains (losses) on available-for-sale securities, Tax 11 (25) 26 (55)
Unrealized gains (losses) on available-for-sale securities, Net of Tax (41) 96 (98) 206
Total other comprehensive income (loss) before income taxes (32) 275 (251) (185)
Other comprehensive income (loss), Tax 11 (25) 26 (55)
Total other comprehensive income (loss) after income taxes $ (21) $ 250 $ (225) $ (240)