Stock-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of unvested stock granted	745,406		386,525
Shares available for grant under Incentive Plan	526,624		931,384
Restricted shares expected to vest	674,835
Number of performance condition restricted shares expected to vest	255,989
Recognized stock-based compensation expense	$ 459,000	$ 337,000
Total income tax effect recognized for share-based compensation arrangements	174,000	128,000
Unrecognized expense on nonvested awards not yet recognized	6,395,000
Weighted-average period of nonvested awards expected to be recognized over	2 years 7 months 6 days
Fair value of awards that vested	$ 604,000
Restricted Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding	326,560
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Approved Stock Awards	1,700,000

Income Tax Effect Recognized On Consolidated Balance Sheet For Share Based Compensation Arrangements

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- Definition

Number Of Performace Condition Restricted Shares Expected To Vest

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- Definition

Number Of Restricted Shares Expected To Vest

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- Definition

Total approved shares available for grant under stock incentive plan.

+ References

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- Definition

Fair value of options vested.

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- Definition

Shares Of Unvested Restricted Stock Granted

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

+ References

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

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

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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- Definition

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

+ References

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-Publisher FASB

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