Stock Based Compensation - Unrecognized Stock-Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized Expense	$ 3,018	$ 2,741	$ 464
Average Expected Recognition Period	2 years 25 days	1 year 10 months 6 days	1 year 2 months 12 days
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options	$ 280	$ 54	$ 464
Average Expected Recognition Period	5 years 21 days	8 months 1 day	1 year 2 months 12 days
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock	$ 2,738	$ 2,687	$ 0
Average Expected Recognition Period	1 year 9 months 3 days	1 year 10 months 13 days

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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

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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.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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