v3.20.4

Income Taxes - Schedule of Reconciliation of Statutory Federal Income Tax Rate to Effective Tax Rate (Details) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax Disclosure [Abstract] |  |  |
U.S. federal income tax at statutory rate | 21.00% | 21.00% | 21.00%
U.S. state and local income taxes | (3.20%) | (0.40%) | (1.30%)
Change in valuation allowance | (698.40%) | (213.40%) | (1039.40%)
Federal research and development tax credit | 102.90% | 30.80% | 166.20%
Stock-based compensation | 577.80% | 158.00% | 859.40%
Meals and Entertainment | (1.60%) | (1.40%) | (6.60%)
Permanent items |  |  | (1.10%)
Foreign rate differential |  | (0.60%) | (1.50%)
Acquisition costs |  | (1.30%) |
Section 162(m) limitation | (7.20%) | (1.40%) |
State apportionment change | 4.40% | 1.30% |
Tax rate change |  | (0.40%) | 2.40%
Provision to return true-up | 9.40% | 9.90% | 5.90%
Other | 0.10% | (0.50%) | 0.10%
Effective tax rate | 5.20% | 1.60% | 5.10%

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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