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Note K - Comprehensive Loss (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | Defined Benefit |  |  | Foreign |  |  |  |  |
In thousands |  | Pension Items |  |  | Currency Items |  |  | Total |
Balance at December 31, 2018 |  | $ | (46,584 | ) |  | $ | 101 |  |  | $ | (46,483 | )
Other comprehensive income, net of tax, before reclassifications |  |  | — |  |  |  | 652 |  |  |  | 652 |
Amounts reclassified from accumulated other comprehensive loss, net of tax |  |  | (5,948 | ) |  |  | — |  |  |  | (5,948 | )
Adoption of ASU 2018-2 |  |  | (11,355 | ) |  |  | — |  |  |  | (11,355 | )
Net current period other comprehensive loss, net of tax |  |  | (17,303 | ) |  |  | 652 |  |  |  | (16,651 | )
Balance at December 31, 2019 |  | $ | (63,887 | ) |  | $ | 753 |  |  | $ | (63,134 | )
Other comprehensive income, net of tax, before reclassifications |  |  | — |  |  |  | 2,180 |  |  |  | 2,180 |
Amounts reclassified from accumulated other comprehensive loss, net of tax |  |  | (4,657 | ) |  |  | — |  |  |  | (4,657 | )
Net current period other comprehensive loss, net of tax |  |  | (4,657 | ) |  |  | 2,180 |  |  |  | (2,477 | )
Balance at December 31, 2020 |  | $ | (68,544 | ) |  | $ | 2,933 |  |  | $ | (65,611 | )

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