Stock-Based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 3,900	$ 2,200	$ 6,500
Compensation expense tax (expense) benefit	(200)	(600)	200
Compensation expense not yet recognized for nonvested awards	$ 5,700
Nonvested awards, total compensation cost not yet recognized, period for recognition	2 years
Shares vested in period, total fair value	$ 4,200	$ 5,100	$ 4,200
Share-based Compensation, Significant Assumptions
Risk-free interest rate	0.19%	1.42%
Expected life, in years	3 years	3 years
Expected volatility, minimum	28.20%	14.90%
Expected volatility, maximum	38.50%	19.70%
Dividend yield	4.30%	3.10%
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance and vesting period	3 years
Performance Shares [Member] \| Minimum [Member]
Share-based Compensation, Significant Assumptions
Percent of shares issued based on company performance	0.00%
Performance Shares [Member] \| Maximum [Member]
Share-based Compensation, Significant Assumptions
Percent of shares issued based on company performance	200.00%
Share-based Payment Arrangement [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance and vesting period	1 year
Share-based Payment Arrangement [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance and vesting period	5 years
Executive retirement/retention program [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance and vesting period	5 years	5 years
Deferred Stock Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum percentage of compensation to be deferred	100.00%
Maximum number of years for distribution payments	10
DSUs Issued	18,741	21,434	19,027
Deferred Compensation Arrangement with Individual, Contributions by Employer	$ 1,100	$ 1,500	$ 1,300
Change in value of shares	1,300	(2,900)	2,400
Deferred Compensation Arrangement with Individual, Compensation Expense	$ 2,400	$ (1,400)	$ 3,700
DSUs withdrawn	186,137	613	3,708
Value of DSUs withdrawn	$ 12,100	$ 100	$ 300
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant	828,486

Deferred Compensation Arrangement with Individual, Change in Value

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Deferred Compensation Arrangement with Individual, Shares Withdrawn

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Share Based Compensation Arrangement Share Based Payment Maximum Number Of Years For Distribution Payments

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Share Based Compensation By Share Based Payment Award Maximum Percentage Of Compensation To be Deferred

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Share Based Compensation Arrangement Performance Based Awards Percentage Of Shares Issued Relative To Company Actual Performance

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

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The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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Amount of contributions made by employer into fund established for purposes of making future disbursement to individual in accordance with deferred compensation arrangement.

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Amount of distribution made to individual in accordance with deferred compensation arrangement.

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Number of shares issued pursuant to the terms of a deferred compensation arrangement.

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

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of tax benefit for recognition of expense of 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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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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