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Consolidated Statement of Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended
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Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2020 | Mar. 31, 2020
Statement of Stockholders' Equity [Abstract] |  |  |  |
Adjustment to pension benefit liability, taxes | $ 10 | $ 10 | $ 6 | $ 7

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- References No definition available. + Details
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