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

3 Months Ended

Sep. 30, 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 September 30, 2020 (in thousands):

Description	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
Cash	$	23,010	$	—	$	—	$	23,010
Cash equivalents:
Money market mutual funds	5,303		—		—		5,303
Total cash equivalents	5,303		—		—		5,303
Total cash and cash equivalents	28,313		—		—		28,313
Short-term investments:
U.S. treasury securities	1,532		27		—		1,559
U.S. agency securities	3,188		44		—		3,232
Asset-backed securities	16,599		352		—		16,951
Municipal securities	6,280		83		—		6,363
Corporate bonds	41,651		750		(1)		42,400
Total short-term investments	69,250		1,256		(1)		70,505
Cash, cash equivalents and short-term investments	$	97,563	$	1,256	$	(1)	$	98,818

Cash, cash equivalents and short-term investments consisted of the following as of June 30, 2020 (in thousands):

Description	Amortized Cost		Unrealized Gains		Unrealized Losses		Estimated Fair Value
Cash	$	20,323	$	—	$	—	$	20,323
Cash equivalents:
Money market mutual funds	195		—		—		195
Total cash equivalents	195		—		—		195
Total cash and cash equivalents	20,518		—		—		20,518
Short-term investments:
U.S. treasury securities	3,712		41		—		3,753
U.S. agency securities	5,004		54		—		5,058
Asset-backed securities	20,392		434		—		20,826
Municipal securities	9,464		78		—		9,542
Corporate bonds	50,173		963		—		51,136
Total short-term investments	88,745		1,570		—		90,315
Cash, cash equivalents and short-term investments	$	109,263	$	1,570	$	—	$	110,833

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 September 30, 2020 (in thousands):

	Amortized Cost		Estimated Fair Value
Due within one year	$	29,750	$	30,096
Due between one and two years	28,791		29,479
Due between two and three years	10,709		10,930
Total	$	69,250	$	70,505