Accumulated Other Comprehensive Income (Summary Of Accumulated Other Comprehensive Income) (Details) $ in Thousands |
9 Months Ended |
---|---|
Sep. 30, 2018
USD ($)
| |
Accumulated Other Comprehensive Income (Loss) [Line Items] | |
Balance | $ 20,991 |
Net current-period other comprehensive (loss) income | (12,148) |
Balance | 8,843 |
Foreign Currency Items [Member] | |
Accumulated Other Comprehensive Income (Loss) [Line Items] | |
Balance | 23,575 |
Net current-period other comprehensive (loss) income | (12,303) |
Balance | 11,272 |
Unrealized Gain (Losses) On Available-For-Sale Investments [Member] | |
Accumulated Other Comprehensive Income (Loss) [Line Items] | |
Balance | 8 |
Net current-period other comprehensive (loss) income | (1) |
Balance | 7 |
Accrued Pension Service Costs [Member] | |
Accumulated Other Comprehensive Income (Loss) [Line Items] | |
Balance | (2,592) |
Net current-period other comprehensive (loss) income | 156 |
Balance | $ (2,436) |