Share-Based Compensation Arrangements (Share Options Activity) (Details) - Stock Options [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Number of Share Options:
Beginning of period	322,140
Granted	57,700	53,700	81,530
Exercised	(7,950)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period	0
End of period	371,890	322,140
Options exercisable at end of period	186,640
Weighted Average Exercise Price (in dollars per share):
Beginning of period	$ 45.95
Granted	48.50
Exercised	30.67
Forfeited or expired	0
End of period	46.67	$ 45.95
Options exercisable at end of period	$ 49.54
Outstanding Weighted Average Remaining Contractual Term	6 years 11 months 12 days
Exercisable Weighted Average Remaining Contractual Term	5 years 2 months 12 days
Outstanding Aggregate Intrinsic Value	$ 1,514
Exercisable Aggregate Intrinsic Value	$ 410

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.