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Accumulated Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2018
Accumulated Other Comprehensive Income [Abstract] |
Summary Of Accumulated Other Comprehensive Income | ﻿
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﻿(Dollars in thousands) |  | Foreign Currency Items(1) |  | Unrealized Gain (Losses) on Available- for-Sale Investments |  | Accrued Pension Service Costs(2) |  | Hedge Accounting Reserve(3) |  | Total
﻿Balance at January 1, 2018 |  | $ | 23,575 |  | $ | 8 |  | $ | (2,592) |  | $ | — |  | $ | 20,991
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﻿Change related to derivatives |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Total change in hedge fair value recorded in Other Comprehensive Income |  |  | — |  |  | — |  |  | — |  |  | (151) |  |  | (151)
﻿Amounts reclassified from accumulated other comprehensive income |  |  | — |  |  | — |  |  | — |  |  | 14 |  |  | 14
﻿Net change related to derivatives |  |  | — |  |  | — |  |  | — |  |  | (137) |  |  | (137)
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﻿Net current-period other comprehensive income |  |  | (14,888) |  |  | (5) |  |  | 154 |  |  | (137) |  |  | (14,876)
﻿Balance at December 31, 2018 |  | $ | 8,687 |  | $ | 3 |  | $ | (2,438) |  | $ | (137) |  | $ | 6,115
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| (1) |  | Net of income tax expense of $389,000.
| (2) |  | Net of income tax expense of $54,000.
| (3) |  | Net of income tax benefit of $48,000

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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=114867106&loc=SL7669686-108580 + Details
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