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Comprehensive Income (Loss) (The Effect of the Reclassifications from Comprehensive Income (Loss) to Earnings) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Foreign currency translation adjustments, Before Tax $ (255) $ 738
Foreign currency translation adjustments, Tax 0 (204)
Foreign currency translation adjustments, Net of Tax (255) 534
Net change related to available-for-sale securities: Unrealized gains (losses), Before Tax 26 (3)
Net change related to available-for-sale securities: Unrealized gains (losses), Tax (5) 0
Net change related to available-for-sale securities: Unrealized gains (losses), Net of Tax 21 (3)
Reclassification adjustments for gains included in interest income and other, Before Tax (3) 0
Reclassification adjustments for gains included in interest income and other, Tax 0 0
Reclassification adjustments for gains included in interest income and other, Net of Tax (3) 0
Total unrealized gains (losses) on available-for-sale securities 23 (3)
Total net changes related to available-for-sale securities, Tax (5) 0
Total net changes related to available-for-sale securities, Net of Tax 18 (3)
Other comprehensive income (loss), before tax (232) 735
Other comprehensive income (loss), Tax (5) (204)
Other comprehensive income (loss), net of tax $ (237) $ 531