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Consolidated Statements of Comprehensive Income (Parentheticals) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Adjustment For Actuarially Determined Liabilities |  |  |  |
Other comprehensive income, tax expense | $ (15) | $ (13) | $ (44) | $ (794)

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