Employee stock purchase plan maximum number of shares authorized.

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- Definition

Employee stock purchase plan payroll deductions percent.

+ References

No definition available.

+ Details

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- Definition

Estimated compensation expenses forfeitures.

+ References

No definition available.

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- Definition

Exercise period for vested option.

+ References

No definition available.

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- Definition

Percentage of common stock shares outstanding.

+ References

No definition available.

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- Definition

Percentage of option vesting period.

+ References

No definition available.

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- Definition

Period of trading days consider for stock fair value.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award expiration period.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award number of additional shares authorized on specified date.

+ References

No definition available.

+ Details

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- Definition

Share based compensation arrangement by share based payment award number of additional shares authorized percentage.

+ References

No definition available.

+ Details

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- Details

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- Definition

The amount of expense, net of income tax, 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

No definition available.

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- Definition

Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

+ Details

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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.

+ References

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target 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)(2)(iii)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(c)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Number of additional shares authorized for issuance under an established share-based compensation plan.

+ References

No definition available.

+ Details

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph c(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (d)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Purchase price of common stock expressed as a percentage of its fair market value.

+ References

No definition available.

+ Details

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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 5

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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Stockholders' Equity (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Stockholders' Equity [Line Items]
Share issued under Employee stock purchase plan			350,762
Common stock reserved but unissued			2,903,000
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense recorded	$ 0		$ 0
Percentage of outstanding common stock shares			1.00%
Stockholders' Equity (Textual) [Abstract]
Percentage of option vesting during the period			25.00%
Vested but unexercised option expiring period			3 months
Estimated compensation expenses forfeitures			4 years
Percentage of common stock outstanding			4.00%
Common stock reserved but unissued			2,903,000
Weighted average grant-date fair value of employee stock options granted	$ 3.41	$ 7.31	$ 6.07	$ 6.71
Percentage of purchase price of the shares on each purchase date is equal to the fair market value			85.00%
Percentage of payroll deductions			10.00%
Common stock on the first and last trading days on offering period			6 months
Common stock, Authorized	1,000,000		1,000,000		1,000,000
Common stock, par value	$ 0.0001		$ 0.0001		$ 0.0001
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share issued under Employee stock purchase plan			200,000
Restricted Stock Outstanding [Member]
Stockholders' Equity [Line Items]
Share-based payment award, award vesting period			4 years
Common stock reserved but unissued
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share issued under Employee stock purchase plan			2,202,000
Stockholders' Equity (Textual) [Abstract]
Common stock reserved but unissued
2011 Plan [Member]
Stockholders' Equity [Line Items]
Share-based payment award, award vesting period			4 years
Vested option expiring period			10 years
Common stock reserved but unissued			3,840,000
Additional share reserved					2,900,000
Stockholders' Equity (Textual) [Abstract]
Common stock reserved but unissued			3,840,000
25% Percentage of option vesting [Member]
Stockholders' Equity [Line Items]
Share-based payment award, award vesting period			1 year
Employee Stock Purchase Plan [Member]
Stockholders' Equity [Line Items]
Shares available for future issuance	1,274,912		1,274,912
Share issued under Employee stock purchase plan			1,500,000