v2.4.0.8

Stockholders' Equity , Range of Options (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number Outstanding (in shares)	15,521
Options Exercisable, Number Exercisable (in shares)	12,084
Range, 0.48 to 1.20 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in dollars per share)	$ 0.48
Exercise Price, maximum (in dollars per share)	$ 1.2
Options Outstanding, Number Outstanding (in shares)	1,331
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	1 year 9 months
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 0.97
Options Exercisable, Number Exercisable (in shares)	1,331
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 0.97
Range, 3.74 to 4.65 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in dollars per share)	$ 3.74
Exercise Price, maximum (in dollars per share)	$ 4.65
Options Outstanding, Number Outstanding (in shares)	4,902
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	1 year 7 months 27 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 3.75
Options Exercisable, Number Exercisable (in shares)	4,902
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 3.75
Range, 5.50 to 6.25 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in dollars per share)	$ 5.5
Exercise Price, maximum (in dollars per share)	$ 6.25
Options Outstanding, Number Outstanding (in shares)	152
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	2 years 8 months 17 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 5.64
Options Exercisable, Number Exercisable (in shares)	152
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 5.64
Range, 8.43 to 8.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in dollars per share)	$ 8.43
Exercise Price, maximum (in dollars per share)	$ 8.99
Options Outstanding, Number Outstanding (in shares)	1,636
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	3 years 1 month 28 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 8.55
Options Exercisable, Number Exercisable (in shares)	1,486
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 8.53
Range, 15.28 to 19.94 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in dollars per share)	$ 15.28
Exercise Price, maximum (in dollars per share)	$ 19.94
Options Outstanding, Number Outstanding (in shares)	382
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	4 years 1 month 24 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 15.88
Options Exercisable, Number Exercisable (in shares)	231
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 15.28
Range, 20.13 to 24.92 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in dollars per share)	$ 20.13
Exercise Price, maximum (in dollars per share)	$ 24.92
Options Outstanding, Number Outstanding (in shares)	4,835
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	4 years 4 months 28 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 21.32
Options Exercisable, Number Exercisable (in shares)	2,902
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 21.20
Range, 26.70 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in dollars per share)	$ 26.7
Exercise Price, maximum (in dollars per share)	$ 26.7
Options Outstanding, Number Outstanding (in shares)	2,283
Options Outstanding, Weighted Average Remaining Contractual Life (in years)	5 years 4 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 26.70
Options Exercisable, Number Exercisable (in shares)	1,080
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 26.70

X

- Definition

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

+ 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)

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

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X

- 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.

+ 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 (g)

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

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X

- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ 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)(iii)

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

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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ 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)(i)-(ii)

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

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X

- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ 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)(i)-(ii)

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

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X

- Definition

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

+ 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 (e)(1)

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

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- Definition

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.

+ 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 (g)

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

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