Benefit Plans (Weighted Average Price And Weighted Average Remaining Contractual Life) (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number Outstanding	163,586	207,303
Number Exercisable	163,586	122,253
Weighted Average Exercise Price	$ 15.13	$ 15.92
Remaining Contractual Life	1 year 10 months 6 days	2 years 7 months 13 days
Intrinsic Value	$ 1,187,000	$ 1,209,000
Range of Exercise Prices 6.93-10.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	$ 6.93
Range of Exercise Prices, Upper Limit	$ 10.99
Number Outstanding	80,650
Number Exercisable	80,650
Weighted Average Exercise Price	$ 8.66
Remaining Contractual Life	3 years 1 month 24 days
Intrinsic Value	1,044,000
Range of Exercise Prices 6.39-13.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit		$ 6.93
Range of Exercise Prices, Upper Limit		$ 13.99
Number Outstanding		85,050
Weighted Average Exercise Price		$ 8.65
Remaining Contractual Life		4 years 1 month 24 days
Intrinsic Value		1,029,000
Range of Exercise Prices 14.00-19.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	$ 14.00	$ 14.00
Range of Exercise Prices, Upper Limit	$ 19.99	$ 19.99
Number Outstanding	34,895	55,401
Number Exercisable	34,895	55,401
Weighted Average Exercise Price	$ 17.51	$ 17.51
Remaining Contractual Life	11 months 19 days	1 year 11 months 19 days
Intrinsic Value	$ 143,000	$ 180,000
Range of Exercise Prices 20.00-22.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit		$ 20.00
Range of Exercise Prices, Upper Limit		$ 22.99
Number Outstanding		18,811
Number Exercisable		18,811
Weighted Average Exercise Price		$ 22.78
Remaining Contractual Life		11 months 19 days
Range of Exercise Prices 23.00-24.27 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Limit	$ 23.00	$ 23.00
Range of Exercise Prices, Upper Limit	$ 24.27	$ 24.27
Number Outstanding	48,041	48,041
Number Exercisable	48,041	48,041
Weighted Average Exercise Price	$ 24.27	$ 24.27
Remaining Contractual Life	3 months 15 days	1 year 3 months 15 days

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 2

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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