XML 100 R46.htm IDEA: XBRL DOCUMENT v3.21.2
Cash Equivalents and Marketable Securities
 9 Months Ended
Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract]  
Cash Equivalents and Marketable Securities Cash Equivalents and Marketable Securities
The amortized costs, unrealized gains and losses, and estimated fair values of the Company’s cash equivalents and marketable securities were as follows (in thousands):
 As of December 31, 2020
 Amortized
Cost		Unrealized
Gain		Unrealized
Loss		Estimated
Fair Value
Cash equivalents:    
Money market funds$28,371 $— $— $28,371 
Marketable securities:
Commercial paper27,473 — — 27,473 
Corporate securities6,940 — (2)6,938 
U.S. Treasury securities16,157 1 — 16,158 
Asset-backed securities2,772 — — 2,772 
Total marketable securities53,342 1 (2)53,341 
Total$81,713 $1 $(2)$81,712 
 As of December 31, 2019
 Amortized
Cost		Unrealized
Gain		Unrealized
Loss		Estimated
Fair Value
Cash equivalents:    
Money market funds$4,090 $— $— $4,090 
Marketable securities:
Certificates of deposit4,586 — — 4,586 
Commercial paper18,128 — — 18,128 
Corporate securities11,176 2 — 11,178 
U.S. Treasury securities51,317 28 — 51,345 
Asset-backed securities10,203 5 — 10,208 
Total marketable securities95,410 35 — 95,445 
Total$99,500 $35 $— $99,535 
All marketable securities are designated as available-for-sale securities as of December 31, 2020 and 2019.
The following tables present the contractual maturities of the Company’s marketable securities (in thousands):
 As of December 31, 2020
 
Amortized
Cost
Estimated
Fair Value
Due within one year$53,342 $53,341 
 As of December 31, 2019
 
Amortized
Cost
Estimated
Fair Value
Due within one year$95,410 $95,445