FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Schedule of Fair Value Measurements

The following tables presents estimated fair values of cash, cash equivalents, restricted cash, and available-for-sale investments:

September 30, 2021	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	$	43,131	$	—	$	—	$	43,131	$	43,131	$	—	$	—	$	—
Level 1:
Money market funds	58,458		—		—		58,458		58,458		—		—		—
Subtotal	101,589		—		—		101,589		101,589		—		—		—
Level 2:
Certificate of deposit	8,641		—		—		8,641		—		8,641		—		—
Commercial paper	27,412		1		(1)		27,412		1,400		—		26,012		—
Corporate debt	28,828		17		(5)		28,840		—		—		18,595		10,245
Subtotal	64,881		18		(6)		64,893		1,400		8,641		44,607		10,245
Total assets	$	166,470	$	18	$	(6)	$	166,482	$	102,989	$	8,641	$	44,607	$	10,245

March 31, 2021	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	$	39,070	$	—	$	—	$	39,070	$	39,070	$	—	$	—	$	—
Level 1:
Money market funds	67,712		—		—		67,712		67,712		—		—		—
Treasury securities	6,177		17		—		6,194		—		—		6,194		—
Subtotal	112,959		17		—		112,976		106,782		—		6,194		—
Level 2:
Certificate of deposit	8,641		—		—		8,641		—		8,641		—		—
Commercial paper	17,656		42		—		17,698		700		—		16,998		—
Corporate debt	22,193		1		—		22,194		5,049		—		17,145		—
Subtotal	48,490		43		—		48,533		5,749		8,641		34,143		—
Total assets	$	161,449	$	60	$	—	$	161,509	$	112,531	$	8,641	$	40,337	$	—