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Balance Sheet Details - Cash and Investments (Details 1) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Balance Sheet Related Disclosures [Abstract]    
Cash and cash equivalents $ 148,095 $ 148,901
Short-term restricted cash 114 115
Long-term restricted cash 984 1,018
Total cash, cash equivalents and restricted cash 149,193 150,034
Money Market Funds, at Carrying Value 20,400 20,400
Restricted cash $ 1,100 $ 1,100