Earnings Per Common Share And Share Awards (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Earnings Per Common Share And Share Awards [Line Items]
Anti-dilutive shares excluded from computation of diluted earnings per share	0	15
Number of SARs granted where exercise price was less than market price on date of grant	0	0
SARs
Earnings Per Common Share And Share Awards [Line Items]
Share-based Payment Arrangement, Expense	$ 102	$ 71
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 206
Maximum \| SARs
Earnings Per Common Share And Share Awards [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Purchased for Award	250
SARs expiration period	7 years
SARs vesting period	5 years

Earnings Per Common Share And Share Awards [Line Items]

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Number of stock options or SARs granted where exercise price was less than market price on date of grant.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Number of shares purchased for issuance under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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