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Cash Equivalents and Short-Term Investments (Tables)

6 Months Ended

Jan. 31, 2020

Cash and Cash Equivalents [Abstract]

Schedule of Cash Equivalents and Short-Term Investments

Cash equivalents and short-term investments consisted of the following as of January 31, 2020:

			Amortized Cost						Unrealized Gains						Unrealized Losses						Fair Value
			(in thousands)
Cash equivalents:
Money market funds			$	42,374					$	—					$	—					$	42,374
U.S. government agency securities			1,500						—						—						1,500
Total			$	43,874					$	—					$	—					$	43,874
Short-term investments:
U.S. treasury securities			$	71,914					$	254					$	—					$	72,168
U.S. government agency securities			112,956						47						(23)						112,980
Corporate debt securities			122,903						334						(5)						123,232
Total			$	307,773					$	635					$	(28)					$	308,380
Total cash equivalents and short-term investments			$	351,647					$	635					$	(28)					$	352,254

Cash equivalents and short-term investments consisted of the following as of July 31, 2019:

			Amortized Cost						Unrealized Gains						Unrealized Losses						Fair Value
Cash equivalents:			(in thousands)
Money market funds			$	55,036					$	—					$	—					$	55,036
Short-term investments:
U.S. treasury securities			$	125,042					$	248					$	(9)					$	125,281
U.S. government agency securities			64,689						7						(50)						64,646
Corporate debt securities			96,047						207						(19)						96,235
Total			$	285,778					$	462					$	(78)					$	286,162
Total cash equivalents and short-term investments			$	340,814					$	462					$	(78)					$	341,198

Schedule of Maturities

The amortized cost and fair value of our short-term investments based on their stated maturities consisted of the following as of January 31, 2020:

			Amortized Cost						Fair Value
			(in thousands)
Due within one year			$	173,815					$	174,232
Due between one and two years			133,958						134,148
Total			$	307,773					$	308,380

Schedule of Unrealized Loss on Investments

Short-term investments that were in an unrealized loss position as of January 31, 2020 consisted of the following:

			Less than 12 Months																		Greater than 12 Months																		Total
			Fair Value						Unrealized Losses						Fair Value						Unrealized Losses						Fair Value						Unrealized Losses
			(in thousands)
U.S. government agency securities			$	28,149					$	(17)					$	20,121					$	(6)					$	48,270					$	(23)
Corporate debt securities			6,288						(4)						1,000						(1)						7,288						(5)
Total			$	34,437					$	(21)					$	21,121					$	(7)					$	55,558					$	(28)

Unrealized losses of the above securities were primarily attributable to changes in interest rates.

Short-term investments that were in an unrealized loss position as of July 31, 2019 consisted of the following:

			Less than 12 Months																		Greater than 12 Months																		Total
			Fair Value						Unrealized Losses						Fair Value						Unrealized Losses						Fair Value						Unrealized Losses
			(in thousands)
U.S. treasury securities			$	5,719					$	(9)					$	—					$	—					$	5,719					$	(9)
U.S. government agency securities			36,550						(37)						9,992						(13)						46,542						(50)
Corporate debt securities			14,279						(16)						8,364						(3)						22,643						(19)
Total			$	56,548					$	(62)					$	18,356					$	(16)					$	74,904					$	(78)

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- References

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Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments.

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- Definition

Tabular disclosure of the components of cash, cash equivalents, and investments.

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- Definition

For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27290-111563

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