v2.4.1.9

Stock Compensation - Schedule of Stock Option Activities (Detail) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Stock Options Outstanding beginning balance	74,060,900
Number of Stock Options granted	0
Number of Stock Options forfeited	(1,930,940)
Number of Stock Options expired	(10,681,990)
Number of Stock Options Outstanding ending balance	61,447,970	74,060,900
Number of Stock Options Vested and exercisable	22,383,800
Weighted Average Exercise Price, Outstanding beginning balance	$ 3.41
Weighted Average Exercise Price, Options granted	$ 0
Weighted Average Exercise Price, Options forfeited	$ 2.50
Weighted Average Exercise Price, Options expired	$ 2.51
Weighted Average Exercise Price, Outstanding ending balance	$ 3.59	$ 3.41
Weighted Average Exercise Price, Vested and exercisable	$ 3.24
Weighted Average Remaining Contractual Life (years), Outstanding	7 years 10 months 24 days	8 years 1 month 6 days
Weighted Average Remaining Contractual Life (years), Vested and exercisable	7 years 6 months
Range One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise prices, lower limit	$ 2.50
Exercise prices, upper limit	$ 7.50
Range Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise Prices, Granted	$ 2.50
Range Four [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise prices, lower limit	$ 2.50
Exercise prices, upper limit	$ 5.00
Range Five [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise prices, lower limit	$ 2.50
Exercise prices, upper limit	$ 7.50
Range Seven [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise prices, lower limit	$ 2.50
Exercise prices, upper limit	$ 7.50

Share based compensation shares authorized under stock option plans exercise price range.

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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.

+ References

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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

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

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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

The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date.

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- Definition

As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest.

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- Definition

Weighted average remaining contractual term for fully vested and expected to vest options that are 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

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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- Definition

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

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- Definition

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

+ References

No definition available.

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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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