7. FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Sep. 30, 2022

FINANCIAL INSTRUMENTS

Schedule of fair value of financial assets measured on a recurring basis

The fair value of financial assets measured on a recurring basis is as follows (in thousands):

			Fair Value Measurements at Reporting Date Using
			Quoted Prices
			in Active		Significant
			Markets for		Other		Significant
			Identical Assets		Observable		Unobservable
			and Liabilities		Inputs		Inputs
	September 30, 2022		(Level 1)		(Level 2)		(Level 3)
Assets:
Money market funds	$	11,483	$	11,483	$	—	$	—
Marketable securities		6,050		—		6,050		—
Total	$	17,533	$	11,483	$	6,050	$	—
Liabilities:
Contingent consideration	$	1,908	$	—	$	—	$	1,908

			Fair Value Measurements at Reporting Date Using
			Quoted Prices
			in Active		Significant
			Markets for		Other		Significant
			Identical Assets		Observable		Unobservable
			and Liabilities		Inputs		Inputs
	March 31, 2022		(Level 1)		(Level 2)		(Level 3)
Assets:
Money market funds	$	16,142	$	16,142	$	—	$	—
Marketable securities		10,337		—		10,337		—
Total	$	26,479	$	16,142	$	10,337	$	—
Liabilities:
Contingent consideration	$	2,738	$	—	$	—	$	2,738

Schedule of changes in fair value of contingent consideration

	Six Months Ended September 30,
	2022		2021
	(In thousands)
Contingent consideration, beginning of period	$	2,738	$	4,225
Change due to accretion		102		45
Re-measurement of contingent consideration		(932)		—
Contingent consideration, end of period	$	1,908	$	4,270

Schedule of available-for-sale investments

	September 30, 2022
			Gross		Gross
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(In thousands)
Short-term investments:
Certificates of deposit	$	3,500	$	—	$	(46)	$	3,454
Agency bonds		2,001		—		(33)		1,968
Total short-term investments	$	5,501	$	—	$	(79)	$	5,422
Long-term investments:
Supranational obligations	$	653	$	—	$	(25)	$	628
Total long-term investments	$	653	$	—	$	(25)	$	628

	March 31, 2022
			Gross		Gross
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(In thousands)
Short-term investments:
Certificates of deposit	$	4,000	$	—	$	(11)	$	3,989
Supranational obligations		1,007		—		(7)		1,000
Agency bonds		2,011		—		(8)		2,003
Total short-term investments	$	7,018	$	—	$	(26)	$	6,992
Long-term investments:
Certificates of deposit	$	1,750	$	—	$	(18)	$	1,732
Supranational obligations		651		—		(17)		634
Agency bonds		997		—		(18)		979
Total long-term investments	$	3,398	$	—	$	(53)	$	3,345

Schedule of unrealized losses and fair value of investments

	September 30, 2022
	Less Than 12 Months				12 Months or Greater				Total
		Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
		Value		Loss		Value		Loss		Value		Loss
	(In thousands)
Certificates of deposit	$	1,720	$	(30)	$	1,733	$	(16)	$	3,453	$	(46)
Agency bonds		1,969		(33)		—		—		1,969		(33)
Supranational obligations		628		(25)		—		—		628		(25)
	$	4,317	$	(88)	$	1,733	$	(16)	$	6,050	$	(104)

	March 31, 2022
	Less Than 12 Months				12 Months or Greater				Total
		Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
		Value		Loss		Value		Loss		Value		Loss
	(In thousands)
Certificates of deposit	$	4,974	$	(26)	$	246	$	(3)	$	5,220	$	(29)
Agency bonds		2,982		(26)		—		—		2,982		(26)
Supranational obligations		1,634		(24)		—		—		1,634		(24)
	$	9,590	$	(76)	$	246	$	(3)	$	9,836	$	(79)

Schedule of contractual maturities of the available-for-sale investments

			Fair
	Cost		Value
	(In thousands)
Maturing within one year	$	5,501	$	5,422
Maturing in one to three years		653		628
	$	6,154	$	6,050