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Marketable Securities and Fair Value Measurements - Schedule of Short Term Marketable Securities (Details)
$ in Thousands
Dec. 31, 2020
USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Cost $ 253
Unrealized Gain (Loss) (3)
Fair Value 250
Corporate debt securities  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Cost 253
Unrealized Gain (Loss) (3)
Fair Value $ 250