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Other Comprehensive Loss (The Effect Of The Reclassifications From Other Comprehensive Loss To Earnings) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Foreign currency translation adjustments, Before Tax $ (600) $ 87
Foreign currency translation adjustments, Tax 0 0
Foreign currency translation adjustments, Net of Tax (600) 87
Unrealized gains on available-for-sale securities, Before Tax 140 58
Unrealized gains on available-for-sale securities, Tax (30) (12)
Unrealized gains on available-for-sale securities, Net of Tax 110 46
Total other comprehensive income (loss) before income taxes (460) 145
Other comprehensive loss, Tax (30) (12)
Other comprehensive loss, net of tax $ (490) $ 133