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Stock-Based Compensation - Summary of PRSU Activity (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Shares Issuable Under PRSUs |  |  |
Options exercisable as of December 31, 2020 | 878,033 |  |
Weighted Average Exercise Price |  |  |
Options exercisable as of December 31, 2020 | $ 16.00 |  |
Aggregate Intrinsic Value |  |  |
Options exercisable as of December 31, 2020 | $ 6,297,510 |  |
PRSUs [Member] |  |  |
Shares Issuable Under PRSUs |  |  |
Outstanding, beginning balance | 3,056 | 4,358 |
Granted |  | 3,056 |
PRSUs Vested | (3,056) | (4,358) |
Outstanding, ending balance |  | 3,056 | 4,358
Weighted Average Exercise Price |  |  |
Outstanding, beginning balance | $ 66.96 | $ 86.94 |
Granted |  | 66.96 |
PRSUs Vested | $ 66.96 | 86.94 |
Outstanding, ending balance |  | $ 66.96 | $ 86.94
Weighted Average Remaining Contractual Term (In years) |  |  |
Outstanding as of January 1, 2019 |  | 9 years 2 months 12 days | 9 years 2 months 12 days

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- Definition Share based compensation arrangement by share based payment award, equity instruments other than options, grants in period, weighted average exercise price. + References No definition available. + Details
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- Definition Share based compensation arrangement by share based payment award, equity instruments other than options, nonvested, weighted average exercise price. + References No definition available. + Details
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- Definition Share based compensation arrangement by share based payment award equity instruments other than options, nonvested, weighted average exercise price. + References No definition available. + Details
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- Definition Share based compensation arrangement by share based payment award, equity instruments other than options, vested in period, weighted average exercise price. + References No definition available. + Details
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- Definition Share based compensation arrangement by share based payment award equity instruments other than options, weighted average remaining contractual terms. + References No definition available. + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + 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)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for equity-based awards excluding 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=120381028&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + 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)(2)(iii)(2) -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 Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + 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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