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Consolidated Statements of Shareholders' Equity (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Statement of Stockholders' Equity [Abstract] |  |  |
Minimum Pension and Post Retirement Benefit Plan Adjustments, tax | $ (24) | $ (225) | $ (110)

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- Definition Tax effect of plan amendments that occurred that has not been recognized in net periodic benefit cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e640-108580 + Details
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Balance Type: | credit
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- References No definition available. + Details
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