FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Sep. 30, 2018

Fair Value Measurements

Fair Value Measurements, Recurring and Nonrecurring (Tables)

Cash, cash equivalents, and available-for-sale investments (in thousands):

				Gross		Gross				Cash and
		Amortized		Unrealized		Unrealized		Estimated		Cash		Short-Term
As of September 30, 2018		Costs		Gain		Loss		Fair Value		Equivalents		Investments
Cash	$	16,585	$	-	$	-	$	16,585	$	16,585	$	-
Level 1:
Money market funds		8,092		-		-		8,092		8,092		-
Subtotal		24,677		-		-		24,677		24,677		-
Level 2:
Commercial paper		3,178		-		-		3,178		-		3,178
Corporate debt		69,575		19		(132)		69,462		-		69,462
Municipal securities		5,501		3		-		5,504		-		5,504
Asset backed securities		21,960		6		(59)		21,907		-		21,907
Agency bond		4,221		-		(40)		4,181		-		4,181
Subtotal		104,435		28		(231)		104,232		-		104,232
Total assets	$	129,112	$	28	$	(231)	$	128,909	$	24,677	$	104,232

				Gross		Gross				Cash and
		Amortized		Unrealized		Unrealized		Estimated		Cash		Short-Term
As of March 31, 2018		Costs		Gain		Loss		Fair Value		Equivalents		Investments
Cash	$	16,499	$	-	$	-	$	16,499	$	16,499	$	-
Level 1:
Money market funds		15,204		-		-		15,204		15,204		-
Subtotal		31,703		-		-		31,703		31,703		-
Level 2:
Commercial paper		13,254		-		(8)		13,246		-		13,246
Corporate debt		70,631		6		(296)		70,341		-		70,341
Municipal securities		3,385		3		(1)		3,387		-		3,387
Asset backed securities		27,063		1		(119)		26,945		-		26,945
Agency bond		4,183		-		(35)		4,148		-		4,148
International government securities		2,497		-		(5)		2,492		-		2,492
Subtotal		121,013		10		(464)		120,559		-		120,559
Total assets	$	152,716	$	10	$	(464)	$	152,262	$	31,703	$	120,559

Contractual maturities of investments as of September 30, 2018 are set forth below (in thousands):

		Estimated
		Fair Value
Due within one year	$	49,792
Due after one year		54,440
Total	$	104,232