Stock Option Plans And Warrants (Narrative) (Details) (USD $)	3 Months Ended
Mar. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum range of exercise prices for outstanding options	$ 2.00
Maximum range of exercise prices for outstanding options	$ 60.92
Weighted average remaining contractual life of options outstanding (years)	4.9
Minimum range of exercise prices for options exercisable	$ 2.00
Maximum range of exercise prices for options exercisable	$ 60.92
Recognized compensation cost	$ 860,000
Total unrecognized compensation cost related to non-vested stock options	3,400,000
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Costs are expected to be recognized over period	2012
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Costs are expected to be recognized over period	2015
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock units issued to employees, net of forfeitures	51,761
Average price restricted stock units	4.38
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted stock units issued to employees, net of forfeitures	399,415
Average price restricted stock	$ 4.38

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- Definition

Share Based Compensation Shares Exercisable Under Stock Option Plans Exercise Price Range Lower Range Limit

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Share Based Compensation Shares Exercisable Under Stock Option Plans Exercise Price Range Upper Range Limit

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- Definition

Unrecognized compensation cost related to non-vested stock options, restricted stock units and restricted stock granted expected to be recognized period

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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.

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Description of the period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year).

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- Definition

Equity-based compensation cost during the period with respect to the award, which will be recognized in income (as well as the total recognized tax benefit) or capitalized as part of the cost of an asset.

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- Definition

The weighted average period between the balance sheet date and expiration for all awards outstanding under the plan, which may be expressed in a decimal value for number of years.

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- Definition

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.

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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.

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Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

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