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Cumulative Other Comprehensive Loss (Tables)
9 Months Ended
Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Schedule of Amounts Recognized in Cumulative Other Comprehensive Loss
The following table presents the amounts recognized in cumulative other comprehensive loss for the nine months ended September 30, 2019 (in thousands):
Unrealized Loss on Marketable Securities
Balance as of January 1, 2019$(342) 
Other comprehensive income342  
Balance as of September 30, 2019
$—