Stock Incentive Plans (Summary of Shares Issued and Available Under Each Plans) (Details) - $ / shares	6 Months Ended
Jun. 30, 2022	Jun. 23, 2022
2022 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate shares issuable	150,000	150,000
Options issued, net of forfeited and expired options	0
Remaining available for grant	150,000
2014 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate shares issuable	275,625	275,625
Options issued, net of forfeited and expired options	(170,106)
Cancelled due to Plan expiration	0
Remaining available for grant	28,031
Total vested and unvested shares	77,488
Fully vested shares	31,764
2014 Stock Plan [Member] \| Unrestricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock grants issued	(11,635)
2014 Stock Plan [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock grants issued	(65,853)
2014 Stock Plan [Member] \| Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total vested and unvested shares	167,901
Fully vested shares	76,148
2014 Stock Plan [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price range	$ 23.75
2014 Stock Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price range	$ 42.62
2005 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate shares issuable	253,575
Options issued, net of forfeited and expired options	(59,870)
Cancelled due to Plan expiration	(193,705)
Remaining available for grant	0	0
Exercise price range	$ 13.69
2005 Stock Plan [Member] \| Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total vested and unvested shares	1,379
Fully vested shares	1,379

Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award.

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- Definition

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- Definition

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

+ References

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-Publisher FASB
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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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Other than shares newly issued, the number of additional shares issued (for example, a stock split) or canceled (for example, to correct a share issuance), during the period under the plan.

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Number of shares issued under share-based payment arrangement.

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Number of options vested.

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