Stock Option Plans And Warrants (Narrative) (Detail) (USD $)	12 Months Ended
Dec. 31, 2011 Year	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future issuance of common stock	1,397,333
Stock options may be exercisable term, years	10
Minimum range of exercise prices for outstanding options	$ 2.00
Maximum range of exercise prices for outstanding options	$ 60.92
Minimum range of exercise prices for options exercisable	$ 2.00
Maximum range of exercise prices for options exercisable	$ 60.92
Weighted average remaining contractual life of options outstanding (years)	5 years 3 months 18 days
Recognized compensation cost	$ 2,600,000
Deferred tax asset	500,000
Total unrecognized compensation cost related to non-vested stock options	2,500,000
Weighted average recognition period of unrecognized compensation, months	12 months
Cash received from exercise of options	$ 72,000
Dividend yield	0.00%	0.00%
Directors And Officers [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, years	2 years
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, years	1 year
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, years	3 years

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Term

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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

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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- Definition

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

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- Definition

Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

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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.

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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

Period 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, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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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

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

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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