Employee Stock And Incentive Plan (Narrative) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2019 USD ($) shares
2009 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance \| shares	6,250,000
Maximum number of shares available for issuance may be issued as restricted stock \| shares	3,125,000
Maximum number of shares subject to grants to any one individual in any one year \| shares	500,000
Underlying stock option and restricted stock awards available for grant \| shares	2,667,480
Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period specified in grant, in years	3 years
Unrecognized compensation costs	$ 1,840
Period over which unrecognized compensation cost will be recognized	1 year 1 month 6 days
Aggregate intrinsic value	$ 12,270
Performance Share Units [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of target award amount the grantee may earn	0.00%
Performance Share Units [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of target award amount the grantee may earn	200.00%
Amortization period of fair value of shares, in months	36 months
Vesting period, in years	3 years
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs	$ 2,187
Vesting period, in years	3 years
Period over which unrecognized compensation cost will be recognized	1 year 4 months 24 days
Aggregate intrinsic value	$ 6,660
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs	$ 2,018
Return on equity	1.50%
Period over which unrecognized compensation cost will be recognized	1 year 6 months
Stock Options [Member] \| Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	33.00%
Stock Options [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, in years	1 year
Stock Options [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, in years	10 years

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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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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The highest quantity of shares an employee can purchase under the plan per period.

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

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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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Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Total Intrinsic Value

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Share Based Compensation Arrangement By Share Based Payment Award Maximum Number Of Shares Available For Issuance May Be Issued As Restricted Stock

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