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Accumulated Other Comprehensive Income (Tables) | 3 Months Ended
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Mar. 31, 2020
Accumulated Other Comprehensive Income [Abstract] |
Summary Of Accumulated Other Comprehensive Income |
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﻿(Dollars in thousands) | Foreign Currency Items |  | Unrealized Gain (Losses) on Available- for-Sale Investments |  | Accrued Pension Service Costs |  | Hedge Accounting Reserve |  | Total
﻿Balance at January 1, 2020 | $ | 8,118 |  | $ | 10 |  | $ | (2,287) |  | $ | (252) |  | $ | 5,589
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﻿Change related to derivatives |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Total change in hedge fair value recorded in Other Comprehensive Income |  | — |  |  | — |  |  | — |  |  | (243) |  |  | (243)
﻿Other comprehensive income before reclassifications |  |  |  |  |  |  |  |  |  |  | — |  |  | —
﻿Amounts reclassified from accumulated other comprehensive income |  | — |  |  | — |  |  | — |  |  | 29 |  |  | 29
﻿Net change related to derivatives |  | — |  |  | — |  |  | — |  |  | (214) |  |  | (214)
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﻿Net current-period other comprehensive income (loss) |  | (15,698) |  |  | (19) |  |  | 52 |  |  | (214) |  |  | (15,879)
﻿Balance at March 31, 2020 | $ | (7,580) |  | $ | (9) |  | $ | (2,235) |  | $ | (466) |  | $ | (10,290)
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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