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Stockholders' Equity Stockholders' Equity (Outstanding stock options) (Details) shares in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 $ / shares shares
Range Of Exercise Prices, $4.78-5.94 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise price range, lower range limit | $ 4.78
Exercise price range, upper range limit | $ 5.94
Number of outstanding options at end of year | shares | 149,021
Weighted-average remaining contractual life, options outstanding | 5 years 3 months 22 days
Weighted average exercise price, options outstanding | $ 5.55
Number of exercisable options at end of year | shares | 149,021
Weighted average exercise price, options exercisable | $ 5.55
Range Of Exercise Prices, $16.73-17.21 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise price range, lower range limit | 16.73
Exercise price range, upper range limit | $ 17.21
Number of outstanding options at end of year | shares | 396,500
Weighted-average remaining contractual life, options outstanding | 7 years 1 month 28 days
Weighted average exercise price, options outstanding | $ 16.73
Number of exercisable options at end of year | shares | 254,498
Weighted average exercise price, options exercisable | $ 16.73
Range of Exercise Prices, $18.86-20.49 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise price range, lower range limit | 18.86
Exercise price range, upper range limit | $ 20.49
Number of outstanding options at end of year | shares | 1,149,868
Weighted-average remaining contractual life, options outstanding | 4 years 7 months 13 days
Weighted average exercise price, options outstanding | $ 21.45
Number of exercisable options at end of year | shares | 179,400
Weighted average exercise price, options exercisable | $ 20.39
Range of Exercise Prices, $4.78-20.49 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Exercise price range, lower range limit | 4.78
Exercise price range, upper range limit | $ 20.49
Number of outstanding options at end of year | shares | 1,695,389
Weighted-average remaining contractual life, options outstanding | 5 years 3 months 7 days
Weighted average exercise price, options outstanding | $ 18.95
Number of exercisable options at end of year | shares | 582,919
Weighted average exercise price, options exercisable | $ 15.00

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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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. + 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 + Details
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- 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 + Details
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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 + Details
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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 + Details
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