Share-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total shares authorized under stock option and incentive plan (in shares)	4,300,000
Number of shares available for future grants of stock options or restricted stock (in shares)	3,683,780
Compensation expense not yet recognized for nonvested share-based awards	$ 31,000
Nonvested share-based awards, expected weighted average period to be recognized (in years)	2 years 4 months 24 days
Total intrinsic value of stock options exercised	$ 7,000	$ 16,000	$ 3,000
Cash received from the exercise of stock options	8,000	20,000	7,000
Aggregate intrinsic value of outstanding stock options	4,000	25,000
Aggregate intrinsic value of exercisable options	$ 3,000	15,000
Outstanding stock options, Weighted average remaining contractual life (in years)	3 years 9 months 18 days
Stock options expected to vest (in shares)	532,955
Stock options expected to vest, Weighted average exercise price (in dollars per share)	$ 57.23
Stock options expected to vest, Weighted average remaining life (in years)	5 years 2 months 12 days
Stock options expected to vest, Aggregate intrinsic value	$ 490
Total fair value at grant date of restricted stock and RSUs vested	$ 25,000	$ 24,000	$ 23,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	7 years
Outstanding stock options, Weighted average remaining contractual life (in years)	2 years 9 months 18 days	2 years 7 months 6 days
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
restricted stock vesting period	4 years
Ratio of common stock to share based payment award (shares)	1
Granted (in shares)	433,674	578,056	586,302
Expected to vest (in shares)	775,833
Expected to vest, Aggregate intrinsic value	$ 38,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
restricted stock vesting period	4 years
Expected to vest (in shares)	60,749
Expected to vest, Aggregate intrinsic value	$ 3,000
Director \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	16,722	16,938	28,992

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

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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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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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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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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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