Consolidated Condensed Statements of Shareholders' Equity (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Statement Of Stockholders Equity [Abstract]
Tax effect on employee benefit funded status adjustment		$ (1)
Cash dividends (in dollars per share)	$ 0.20	$ 0.18
Issuance of treasury stock (in shares)	21	23
Common stock, par value (in dollars per share)	$ 1

Aggregate dividends paid during the period for each share of common stock outstanding.

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Face amount or stated value per share of common stock.

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Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income for defined benefit plan, attributable to parent.

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Number of treasury shares or units reissued. Excludes reissuance of shares or units in treasury for award under share-based payment arrangement.

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