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Stock Based Compensation - Narrative (Details) - USD ($) | 3 Months Ended | 6 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Share-based Payment Arrangement [Abstract] |  |  |  |
Expected to be recognized as compensation expense | $ 64,000.0 | $ 27,000.0 | $ 107,000.0 | $ 32,000.0
Unrecognized compensation expense | $ 39,200,000 |  | $ 39,200,000 |

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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Expeected Compensation Expense + References No definition available. + Details
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- References No definition available. + Details
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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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