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Cumulative Other Comprehensive Loss
 12 Months Ended
Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Cumulative Other Comprehensive Loss Cumulative Other Comprehensive Loss
 
The following tables present the amounts recognized in cumulative other comprehensive loss for the year ended December 31, 2019 (in thousands):

Unrealized Loss on Marketable Securities
Balance as of January 1, 2019$(342)
Other comprehensive income342 
Balance as of December 31, 2019$— 

We did not reclassify any amounts out of cumulative other comprehensive loss for the year ended December 31, 2019.