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Fair Value Measurements
9 Months Ended
Oct. 31, 2020
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements
The carrying amounts of accounts receivable and other current assets, accounts payable, and accrued liabilities approximate their fair value due to their short-term nature.
Financial assets and liabilities recorded at fair value in the condensed consolidated financial statements are categorized based upon the level of judgment associated with the inputs used to measure their fair value. Hierarchical levels, which are directly related to the amount of subjectivity associated with the inputs to the valuation of these assets or liabilities are as follows:
Level 1—Observable inputs, such as quoted prices in active markets for identical assets or liabilities.
Level 2—Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
Financial assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement requires management to make judgments and considers factors specific to the asset or liability.
The following table presents the fair value hierarchy for financial assets measured at fair value on a recurring basis as of October 31, 2020 (in thousands):
Level 1
Level 2
Total
Assets
Cash equivalents:
Money market funds$193,054 $— $193,054 
Corporate notes and bonds— 1,200 1,200 
Short-term investments:
Certificates of deposits— 15,612 15,612 
Asset-backed securities— 131,544 131,544 
Commercial paper— 58,636 58,636 
Corporate notes and bonds— 417,181 417,181 
Foreign government bonds— 32,027 32,027 
U.S. agency obligations— 52,822 52,822 
U.S. treasury securities— 248,345 248,345 
Foreign currency derivative contracts— 85 85 
Total$193,054 $957,452 $1,150,506 
Liabilities
Foreign currency derivative contracts$— $65 $65 
Total$— $65 $65 
The following table presents the fair value hierarchy for financial assets measured at fair value on a recurring basis as of January 31, 2020 (in thousands):
Level 1
Level 2
Total
Assets
Cash equivalents:
Money market funds$24,107 $— $24,107 
Commercial paper— 1,616 1,616 
Corporate notes and bonds— 2,245 2,245 
Short-term investments:
Certificates of deposits— 3,503 3,503 
Asset-backed securities— 100,815 100,815 
Commercial paper— 19,969 19,969 
Corporate notes and bonds— 236,214 236,214 
Foreign government bonds— 3,407 3,407 
U.S. treasury securities— 246,107 246,107 
Foreign currency derivative contracts— 75 75 
Total$24,107 $613,951 $638,058 
Liabilities
Foreign currency derivative contracts$— $42 $42 
Total$— $42 $42 
We determine the fair value of our security holdings based on pricing from our service providers and market prices from industry-standard independent data providers. The valuation techniques used to measure the fair value of financial instruments having Level 2 inputs were derived from non-binding consensus prices that are corroborated by observable market data or quoted market prices for similar instruments. Such market prices may be quoted prices in active markets for identical assets (Level 1 inputs) or pricing determined using inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs).
Balance Sheet Hedges
We enter into foreign currency forward contracts (the “Forward Contracts”) in order to hedge our foreign currency exposure. We account for derivative instruments at fair value with changes in the fair value recorded as a component of other income, net in our condensed consolidated statements of comprehensive income. Cash flows from such forward contracts are classified as operating activities. The realized foreign currency loss we recognized was immaterial for the three months ended October 31, 2020 and the loss was $1 million for the nine months ended October 31, 2020. The realized foreign currency gains and losses were immaterial for the three and nine months ended October 31, 2019.
The fair value of our outstanding derivative instruments is summarized below (in thousands): 
October 31,
2020
January 31,
2020
Notional amount of foreign currency derivative contracts$10,409 $7,304 
Fair value of foreign currency derivative contracts10,390 7,271 
Details on outstanding balance sheet hedges are presented below as of the date shown below (in thousands): 
Derivatives not designated as hedging instruments
Balance sheet location
October 31,
2020
January 31,
2020
Derivative Assets
Foreign currency derivative contractsPrepaid expenses and other current assets$85 $75 
Derivative Liabilities
Foreign currency derivative contractsAccrued expenses$65 $42