FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Jun. 30, 2020

Fair Value Disclosures [Abstract]

Schedule of Fair Value Measurements

Cash, cash equivalents, restricted cash, and available-for-sale investments were as follows (in thousands):

As of June 30, 2020	Amortized Costs		Gross Unrealized Gain		Gross Unrealized Loss			Estimated Fair Value		Cash and Cash Equivalents		Restricted Cash (Current & Non-Current)		Short-Term Investments		Long-Term Investments
Cash	$	34,028	$	—	$	—		$	34,028	$	23,652	$	10,376	$	—	$	—
Level 1:
Money market funds	88,638		—		—			88,638		88,638		—		—		—
Treasury securities	11,686		89		—			11,775		—		—		11,775		—
Subtotal	134,352		89		—			134,441		112,290		10,376		11,775		—
Level 2:
Certificate of deposit	8,641		—		—			8,641		—		8,641		—		—
Commercial paper	9,395		1		—			9,396		4,400		—		4,996		—
Corporate debt	33,629		152		(7		)	33,774		—		—		23,809		9,965
Subtotal	51,665		153		(7		)	51,811		4,400		8,641		28,805		9,965
Total assets	$	186,017	$	242	$	(7	)	$	186,252	$	116,690	$	19,017	$	40,580	$	9,965

As of March 31, 2020	Amortized Costs		Gross Unrealized Gain		Gross Unrealized Loss			Estimated Fair Value		Cash and Cash Equivalents		Restricted Cash (Current & Non-Current)		Short-Term Investments		Long-Term Investments
Cash	$	31,378	$	—	$	—		$	31,378	$	21,002	$	10,376	$	—	$	—
Level 1:
Money market funds	110,796		—		—			110,796		110,796		—		—		—
Treasury securities	6,192		116		—			6,308		—		—		—		6,308
Subtotal	148,366		116		—			148,482		131,798		10,376		—		6,308
Level 2:
Certificate of deposit	8,641		—		—			8,641		—		8,641		—		—
Commercial paper	14,979		6		—			14,985		5,596		—		9,389		—
Corporate debt	34,153		32		(341		)	33,844		—		—		24,069		9,775
Subtotal	57,773		38		(341		)	57,470		5,596		8,641		33,458		9,775
Total assets	$	206,139	$	154	$	(341	)	$	205,952	$	137,394	$	19,017	$	33,458	$	16,083