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v3.19.3.a.u2

Statements of Consolidated Shareholders' Equity (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Tax provision (benefit) for recognized net actuarial loss (gain) | $ 123 | $ 139 |
Tax provision (benefit) | $ (60) | $ (77) |
Common Shares [Member] |  |  |
Issuance of common shares | 88,377 | 34,521 | 42,080
Common Shares Issued to Rabbi Trust [Member] |  |  |
Common shares distributed from rabbi trust | 1,989 | 19,396 | 8,255
Deferred Compensation Liability [Member] |  |  |
Common shares distributed from rabbi trust | 1,989 | 19,396 | 8,255
Paid In Capital [Member] |  |  |
Issuance of common shares | 88,377 | 34,521 | 42,080
Retained Earnings [Member] |  |  |
Cash dividends declared per share | $ 0.80 | $ 0.80 | $ 0.80
Treasury Stock [Member] |  |  |
Purchase of common shares | 120,848 | 52,318 | 121,626
Unrecognized Pension Benefit Cost [Member] |  |  |
Tax provision (benefit) for recognized net actuarial loss (gain) | $ 123 | $ 139 | $ 199
Tax provision (benefit) | $ (60) | $ (77) | $ 247

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