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Stock-Based Compensation - Narrative (Details) | 12 Months Ended
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Dec. 31, 2019 USD ($) shares
The 2009 ESPP |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of additional shares authorized | 1,500,000
Number of shares authorized | 3,000,000
Maximum employee subscription rate (in percent) | 10.00%
Maximum amount of stock per employee | $ | $ 25,000
Purchase price of common stock (in percent) | 85.00%
Discount from market price, offering date (in percent) | 15.00%
Shares available for purchase | 1,526,505
2013 Stock Incentive Plan |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of shares authorized | 3,800,000
Shares available for purchase | 1,100,660
Shares outstanding | 0
2013 Stock Incentive Plan | Restricted Stock Units (RSUs) |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Award vesting period | 4 years
Weighted average attainment level for performance and time vesting RSUs (in percent) | 75.70%
Unvested RSUs | $ | $ 14,200,000
Weighted average vesting period | 2 years 2 months 12 days
2013 Stock Incentive Plan | Restricted Stock Units (RSUs) | Maximum |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Award vesting period | 4 years
2013 Stock Incentive Plan | Time Vesting RSU |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Issuance of restricted stock to employees (in shares) | 67,152
2013 Stock Incentive Plan | Performance and Time Vesting RSU's |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Issuance of restricted stock to employees (in shares) | 221,609
2013 Stock Incentive Plan | Performance RSU |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Issuance of restricted stock to employees (in shares) | 167,808

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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=116856206&loc=d3e5070-113901 + Details
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- Definition Amount of cost to be recognized for option 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=116856206&loc=d3e5070-113901 + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Discount rate from fair value on offering date that participants pay for shares. + 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=116856206&loc=d3e5070-113901 + 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 highest percentage of annual salary that an employee is permitted to utilize with respect to the 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 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + 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=116856206&loc=d3e5070-113901 + Details
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