Cash, cash equivalents and short-term investments (Tables)

9 Months Ended

Mar. 31, 2020

Cash, Cash Equivalents, and Short-term Investments [Abstract]

Schedule of cash, cash equivalents and short-term investments

Cash, cash equivalents and short-term investments consisted of the following as of March 31, 2020 (in thousands):

Description	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
Cash	$	15,594	$	—	$	—		$	15,594
Cash equivalents:
Money market mutual funds	382		—		—			382
Commercial paper	500		—		—			500
Total cash equivalents	882		—		—			882
Total cash and cash equivalents	16,476		—		—			16,476
Short-term investments:
U.S. treasury securities	2,615		54		—			2,669
U.S. agency securities	3,809		62		—			3,871
Asset-backed securities	20,610		106		(74		)	20,642
Municipal securities	9,415		43		—			9,458
Commercial paper	3,193		2		—			3,195
Corporate bonds	67,601		181		(344		)	67,438
Total short-term investments	107,243		448		(418		)	107,273
Cash, cash equivalents and short-term investments	$	123,719	$	448	$	(418	)	$	123,749

Cash, cash equivalents and short-term investments consisted of the following as of June 30, 2019 (in thousands):

Description	Amortized Cost		Unrealized Gains		Unrealized Losses			Estimated Fair Value
Cash	$	25,987	$	—	$	—		$	25,987
Cash equivalents:
Money market mutual funds	790		—		—			790
Commercial paper	498		—		—			498
Total cash equivalents	1,288		—		—			1,288
Total cash and cash equivalents	27,275		—		—			27,275
Short-term investments:
U.S. treasury securities	3,570		6		(4		)	3,572
U.S. agency securities	3,002		9		(2		)	3,009
Asset-backed securities	12,319		104		(10		)	12,413
Municipal securities	4,124		16		—			4,140
Commercial paper	1,986		—		—			1,986
Corporate bonds	45,492		269		(27		)	45,734
Total debt securities	70,493		404		(43		)	70,854
Marketable equity securities	250		1,099		—			1,349
Total short-term investments	70,743		1,503		(43		)	72,203
Cash, cash equivalents and short-term investments	$	98,018	$	1,503	$	(43	)	$	99,478

Schedule of fair value and gross unrealized losses related to available-for-sale securities

The following table summarizes the fair value and gross unrealized losses related to available-for-sale securities, aggregated by investment category, that have been in an unrealized loss position for less than 12 months or a continuous unrealized loss position for 12 months or greater, as of March 31, 2020 and June 30, 2019 (in thousands):

	March 31, 2020
	Less than 12 Months					12 Months or Greater				Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Asset-backed securities	$	7,671	$	(74	)	$	—	$	—	$	7,671	$	(74	)
Corporate bonds	40,090		(344		)	—		—		40,090		(344		)
Total	$	47,761	$	(418	)	$	—	$	—	$	47,761	$	(418	)

	June 30, 2019
	Less than 12 Months					12 Months or Greater					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
U.S. treasury securities	$	—	$	—		$	2,992	$	(5	)	$	2,992	$	(5	)
U.S. agency securities	—		—			998		(1		)	998		(1		)
Asset-backed securities	—		—			3,537		(11		)	3,537		(11		)
Commercial paper	493		(1		)	—		—			493		(1		)
Corporate bonds	4,600		(3		)	14,615		(24		)	19,215		(27		)
Total	$	5,093	$	(4	)	$	22,142	$	(41	)	$	27,235	$	(45	)

Schedule of cost and estimated fair value of short-term fixed income securities classified as short-term investments

The following table summarizes the cost and estimated fair value of short-term fixed income securities classified as short-term investments based on stated maturities as of March 31, 2020 (in thousands):

	Amortized Cost		Estimated Fair Value
Due within one year	$	44,564	$	44,549
Due between one and two years	44,235		44,345
Due between two and three years	18,444		18,379
Total	$	107,243	$	107,273