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Stock-Based Compensation - Stock Options By Exercise Price Ranges (Details) | 12 Months Ended
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Dec. 31, 2018 $ / shares shares
$8.88 to $13.35 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Low end of exercise price range (in dollars per share) | $ 8.88
High end of exercise price range (in dollars per share) | $ 13.35
Outstanding options |
Number outstanding (in shares) | shares | 3,637,366
Weighted-average remaining contractual life | 3 years 2 months 19 days
Weighted-average exercise price (in dollars per share) | $ 12.65
Exercisable options |
Number outstanding (in shares) | shares | 2,645,735
Weighted-average exercise price (in dollars per share) | $ 12.53
$13.50 to $20.52 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Low end of exercise price range (in dollars per share) | 13.50
High end of exercise price range (in dollars per share) | $ 20.52
Outstanding options |
Number outstanding (in shares) | shares | 1,570,183
Weighted-average remaining contractual life | 4 years 10 months 13 days
Weighted-average exercise price (in dollars per share) | $ 14.38
Exercisable options |
Number outstanding (in shares) | shares | 452,466
Weighted-average exercise price (in dollars per share) | $ 14.56
$20.75 to $32.90 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Low end of exercise price range (in dollars per share) | 20.75
High end of exercise price range (in dollars per share) | $ 32.90
Outstanding options |
Number outstanding (in shares) | shares | 661,662
Weighted-average remaining contractual life | 6 years 3 days
Weighted-average exercise price (in dollars per share) | $ 30.67
Exercisable options |
Number outstanding (in shares) | shares | 1,259
Weighted-average exercise price (in dollars per share) | $ 20.75
$8.88 to $32.90 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Low end of exercise price range (in dollars per share) | 8.88
High end of exercise price range (in dollars per share) | $ 32.90
Outstanding options |
Number outstanding (in shares) | shares | 5,869,211
Weighted-average remaining contractual life | 3 years 11 months 19 days
Weighted-average exercise price (in dollars per share) | $ 15.14
Exercisable options |
Number outstanding (in shares) | shares | 3,099,460
Weighted-average exercise price (in dollars per share) | $ 12.83

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- Definition Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options [Abstract] + References No definition available. + Details
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- Definition Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options [Abstract] + References No definition available. + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=109197908&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI http://asc.fasb.org/extlink&oid=109197908&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://fasb.org/us-gaap/role/ref/legacyRef -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=109197908&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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=109197908&loc=d3e5070-113901 + Details
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- 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://fasb.org/us-gaap/role/ref/legacyRef -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=109197908&loc=d3e5070-113901 + Details
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- 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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