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Equity Award Plans - Information About Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands | 9 Months Ended
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Sep. 30, 2015 | Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |  |
Total fair value of options granted | $ 869 | $ 7,536
Weighted average fair value of options granted (in dollars per share) | $ 2.13 | $ 5.96
Intrinsic value of options exercised | $ 1,535 | $ 13,900

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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + 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 (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + 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 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 + Details
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- Definition Value, before forfeitures, of stock or other type of equity granted of any equity-based compensation plan other than an employee stock ownership plan (ESOP). + References No definition available. + Details
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