Marketable Securities & Fair Value Measurements (Tables)

3 Months Ended

Sep. 30, 2019

Fair Value Disclosures [Abstract]

Marketable Securities [Table Text Block]

	September 30, 2019		June 30, 2019
Short-term available-for-sale debt securities	$	33,321	$	38,193
Long-term available-for-sale debt securities	12,294		9,832
Available-for-sale debt securities	45,615		48,025
Mutual funds	413		410
Total marketable securities	$	46,028	$	48,435

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

			As of September 30, 2019
	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
Commercial paper	$	6,957	$	—	$	—	$	6,957
Corporate debt	28,932		95		(4)		29,023
Asset backed securities	9,624		14		(3)		9,635
Total available-for-sale debt securities	$	45,513	$	109	$	(7)	$	45,615

			As of June 30, 2019
	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
Commercial paper	$	14,277	$	—	$	—	$	14,277
Corporate debt	26,466		64		—		26,530
Asset backed securities	7,204		14		—		7,218
Total available-for-sale debt securities	$	47,947	$	78	$	—	$	48,025

Fair Value, Assets Measured on Recurring Basis

			Fair Value Measurements as of September 30, 2019 Using Inputs Considered as
	Fair Value		Level 1		Level 2		Level 3
Commercial paper	$	6,957	$	—	$	6,957	$	—
Corporate debt	29,023		—		29,023		—
Asset backed securities	9,635		—		9,635		—
Mutual funds	413		122		291		—
Total marketable securities	$	46,028	$	122	$	45,906	$	—

			Fair Value Measurements as of June 30, 2019 Using Inputs Considered as
	Fair Value		Level 1		Level 2		Level 3
Commercial paper	$	14,277	$	—	$	14,277	$	—
Corporate debt	26,530		—		26,530		—
Asset backed securities	7,218		—		7,218		—
Mutual funds	410		121		289		—
Total marketable securities	$	48,435	$	121	$	48,314	$	—