Share-Based Compensation (Summary Of Option Activity) (Details) (USD $)	12 Months Ended
Dec. 31, 2013
Plan Based [Member] \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Shares, Beginning of year	7,514,697
Options granted	258,780
Exercised, Shares	(217,181)
Forfeited, Shares	0
Expired, Shares	(627,086)
Outstanding, Shares, End of year	6,929,210
Outstanding, Weighted Average Exercise Price, Beginning of year	$ 3.26
Granted, Weighted Average Exercise Price	$ 3.32
Exercised, Weighted Average Exercise Price	$ 1.21
Forfeited, Weighted Average Exercise Price	$ 0.00
Expired, Weighted Average Exercise Price	$ 8.36
Outstanding, Weighted Average Exercise Price, End of year	$ 2.87
Outstanding, Weighted Average Remaining Contractual Term	4 years 4 months 24 days
Outstanding, Aggregate Intrinsic Value	$ 15,433,876
Exercisable, Shares	4,780,057
Exercisable, Weighted Average Exercise Price	$ 3.24
Exercisable, Weighted Average Remaining Contractual Term	3 years 11 months 23 days
Exercisable, Aggregate Intrinsic Value	10,042,794
Non Plan [Member] \| Warrants And Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Shares, Beginning of year	2,967,911
Options granted	0
Exercised, Shares	(1,008,394)
Forfeited, Shares	0
Expired, Shares	0
Outstanding, Shares, End of year	1,959,517
Outstanding, Weighted Average Exercise Price, Beginning of year	$ 0.87
Granted, Weighted Average Exercise Price	$ 0.00
Exercised, Weighted Average Exercise Price	$ 0.99
Forfeited, Weighted Average Exercise Price	$ 0.00
Expired, Weighted Average Exercise Price	$ 0.00
Outstanding, Weighted Average Exercise Price, End of year	$ 0.81
Outstanding, Weighted Average Remaining Contractual Term	1 year 11 months 16 days
Outstanding, Aggregate Intrinsic Value	7,336,710
Exercisable, Shares	1,959,517
Exercisable, Weighted Average Exercise Price	$ 0.81
Exercisable, Weighted Average Remaining Contractual Term	1 year 11 months 16 days
Exercisable, Aggregate Intrinsic Value	$ 7,336,710

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

+ References

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- Definition

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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

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- 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.

+ References

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- Definition

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

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- Definition

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(4)

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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- Definition

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

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- Definition

Number of options outstanding, including both vested and non-vested options.

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-Name Accounting Standards Codification

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

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

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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No definition available.

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- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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