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Share-Based Compensation - Summary of Stock Options Outstanding (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Number of shares vested and exercisable (in shares) | 740,321 | 538,949 | 515,977
Options vested and exercisable weighted average remaining contractual life | 6 years | 5 years 9 months 21 days | 5 years 11 months 12 days
Options vested and exercisable weighted average exercise price (in dollars per share) | $ 31.85 | $ 21.58 | $ 21.88
Options vested and exercisable intrinsic value | $ 25,751 | $ 12,842 | $ 6,811
$7.18 - 36.95 |  |  |
Range of exercise prices, lower range | $ 7.18 |  |
Range of exercise prices, upper range | $ 36.95 |  |
Number of shares vested and exercisable (in shares) | 543,646 |  |
Options vested and exercisable weighted average remaining contractual life | 5 years 3 months 29 days |  |
Options vested and exercisable weighted average exercise price (in dollars per share) | $ 28.33 |  |
Options vested and exercisable intrinsic value | $ 20,820 |  |
$37.00 - 40.87 |  |  |
Range of exercise prices, lower range | $ 37.00 |  |
Range of exercise prices, upper range | $ 40.87 |  |
Number of shares vested and exercisable (in shares) | 1,978 |  |
Options vested and exercisable weighted average remaining contractual life | 7 years 1 month 2 days |  |
Options vested and exercisable weighted average exercise price (in dollars per share) | $ 38.50 |  |
Options vested and exercisable intrinsic value | $ 56 |  |
$41.37 - 66.98 |  |  |
Range of exercise prices, lower range | $ 41.37 |  |
Range of exercise prices, upper range | $ 66.98 |  |
Number of shares vested and exercisable (in shares) | 194,697 |  |
Options vested and exercisable weighted average remaining contractual life | 7 years 10 months 13 days |  |
Options vested and exercisable weighted average exercise price (in dollars per share) | $ 41.59 |  |
Options vested and exercisable intrinsic value | $ 4,875 |  |
$7.18 - 34.10 |  |  |
Range of exercise prices, lower range |  | $ 7.18 |
Range of exercise prices, upper range |  | $ 34.10 |
Number of shares vested and exercisable (in shares) |  | 451,077 |
Options vested and exercisable weighted average remaining contractual life |  | 5 years 5 months 8 days |
Options vested and exercisable weighted average exercise price (in dollars per share) |  | $ 23.47 |
Options vested and exercisable intrinsic value |  | $ 11,702 |
$34.15 - 40.87 |  |  |
Range of exercise prices, lower range |  | $ 34.15 |
Range of exercise prices, upper range |  | $ 40.87 |
Number of shares vested and exercisable (in shares) |  | 86,122 |
Options vested and exercisable weighted average remaining contractual life |  | 7 years 9 months 25 days |
Options vested and exercisable weighted average exercise price (in dollars per share) |  | $ 36.33 |
Options vested and exercisable intrinsic value |  | $ 1,126 |
$41.37 - 50.68 |  |  |
Range of exercise prices, lower range |  | $ 41.37 |
Range of exercise prices, upper range |  | $ 50.68 |
Number of shares vested and exercisable (in shares) |  | 1,750 |
Options vested and exercisable weighted average remaining contractual life |  | 1 year 9 months 21 days |
Options vested and exercisable weighted average exercise price (in dollars per share) |  | $ 41.59 |
Options vested and exercisable intrinsic value |  | $ 14 |
$5.67 - 32.80 |  |  |
Range of exercise prices, lower range |  |  | $ 5.67
Range of exercise prices, upper range |  |  | $ 32.80
Number of shares vested and exercisable (in shares) |  |  | 456,223
Options vested and exercisable weighted average remaining contractual life |  |  | 5 years 8 months 19 days
Options vested and exercisable weighted average exercise price (in dollars per share) |  |  | $ 20.25
Options vested and exercisable intrinsic value |  |  | $ 6,757
$32.85 - 34.10 |  |  |
Range of exercise prices, lower range |  |  | $ 32.85
Range of exercise prices, upper range |  |  | $ 34.10
Number of shares vested and exercisable (in shares) |  |  | 42,552
Options vested and exercisable weighted average remaining contractual life |  |  | 7 years 5 months 19 days
Options vested and exercisable weighted average exercise price (in dollars per share) |  |  | $ 33.95
Options vested and exercisable intrinsic value |  |  | $ 47
$34.15 - 42.94 |  |  |
Range of exercise prices, lower range |  |  | $ 34.15
Range of exercise prices, upper range |  |  | $ 42.94
Number of shares vested and exercisable (in shares) |  |  | 17,202
Options vested and exercisable weighted average remaining contractual life |  |  | 8 years 3 months 18 days
Options vested and exercisable weighted average exercise price (in dollars per share) |  |  | $ 35.19
Options vested and exercisable intrinsic value |  |  | $ 7

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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=120381028&loc=d3e5070-113901 + Details
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