Quarterly report pursuant to Section 13 or 15(d)

Cash, Cash Equivalents and Short-Term Investments - Unrealized Loss Position (Details)

v3.20.2
Cash, Cash Equivalents and Short-Term Investments - Unrealized Loss Position (Details)
9 Months Ended
Sep. 30, 2020
USD ($)
item
Fair value and gross unrealized losses of investments in individual securities in unrealized loss position  
Weighted-average time to maturity of cash equivalents and available-for-sale securities 64 days
Number of investments in continuous unrealized loss position for more than 12 months 0
Number of individual securities in unrealized loss position for 12 months or less | item 11
Other-than-temporary impairments of securities $ 0
Fair Value 14,027,000
Unrealized Losses (1,000)
U.S. treasury bills  
Fair value and gross unrealized losses of investments in individual securities in unrealized loss position  
Fair Value 14,027,000
Unrealized Losses $ (1,000)