Share-Based Compensation - Valuation Assumptions (Details) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2022 USD ($) plan $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of plans \| plan	2
Share-based Compensation, Fair Value Assumptions [Abstract]
Weighted average fair values of stock options granted (in dollars per share) \| $ / shares	$ 0	$ 15.53	$ 15.58
Expected volatility	0.00%	77.10%	64.70%
Expected dividends	0.00%	0.99%	0.84%
Weighted average risk-free interest rate	0.00%	0.93%	0.24%
Expected life of stock options (in years)	0 years	3 years 6 months	3 years 6 months
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense \| $	$ 618	$ 539	$ 517
Employee and Non-employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	0	0	0

Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Plans

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- Definition

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

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- Definition

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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- Definition

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 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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- Definition

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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- Definition

Gross number of share options (or share units) granted during the period.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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