v3.20.2

Stockholders' Equity - Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |  |  |
Outstanding balance at the end of the period (in shares) | 4,023,741 |  |
Stock options |  |  |
Stock-Based Compensation |  |  |
Expiration period | 10 years |  |
Vesting period | 4 years |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |  |  |
Outstanding balance at the beginning of the period (in shares) | 4,373,895 |  |
Granted (in shares) | 8,597 |  |
Exercised (in shares) | (277,375) |  |
Forfeited (in shares) | (46,452) |  |
Expired (in shares) | (34,924) |  |
Outstanding balance at the end of the period (in shares) |  |  | 4,373,895
Exercisable at the end of the period (in shares) | 3,202,271 |  |
Share-based Compensation Arrangement by Share-based Payment Award Options Outstanding Weighted Average Exercise Price [Roll Forward] |  |  |
Outstanding balance at the beginning of the period (in dollars per share) | $ 34.24 |  |
Granted (in dollars per share) | 19.61 |  |
Exercised (in dollars per share) | 11.26 |  |
Forfeited (in dollars per share) | 61.21 |  |
Expired (in dollars per share) | 43.72 |  |
Outstanding balance at the end of the period (in dollars per share) | 35.40 |  | $ 34.24
Exercisable at the end of the period (in dollars per share) | $ 27.36 |  |
Weighted-Average Remaining Contractual Term |  |  |
Outstanding balance | 5 years 3 months 3 days |  | 5 years 10 months 17 days
Weighted-average remaining contractual term of options exercisable at the end of the period (in years) | 4 years 6 months 21 days |  |
Share Based Compensation Arrangement By Share Based Payment Award Options Intrinsic Value [Abstract] |  |  |
Outstanding balance at the end of the period | $ 47,336 |  | $ 28,736
Exercisable at the end of the period | $ 46,521 |  |
Weighted average grant date fair value (in dollars per share) | $ 11.48 | $ 29.38 |
Intrinsic value of options exercisable at the end of the period | $ 6,800 | $ 14,200 |
Compensation cost related to the nonvested awards not yet recognized | $ 22,900 |  |
Weighted average period for recognition of compensation cost | 2 years 5 months 1 day |  |

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- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + 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 (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents 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 (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + 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=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + 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=120381028&loc=d3e5070-113901 + Details
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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + 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)(iv)(4) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options 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 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + 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 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: 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=120381028&loc=d3e5070-113901 + Details
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