6. FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

Mar. 31, 2016

Financial Instruments.

Schedule of Fair value of financial assets and liabilities 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 Markets for Identical Assets and Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
	March 31, 2016		(Level 1)		(Level 2)		(Level 3)
Assets:
Money market funds	$	6,611	$	6,611		—	$	—
Marketable securities		34,297		—		34,297		—
Total	$	40,908	$	6,611	$	34,297	$	—

			Fair Value Measurements at Reporting Date Using
			Quoted Prices in Active Markets for Identical Assets and Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
	March 31, 2015		(Level 1)		(Level 2)		(Level 3)
Assets:
Money market funds	$	4,409	$	4,409	$	—	$	—
Marketable securities		43,941		—		43,941		—
Total	$	48,350	$	4,409	$	43,941	$	—

Schedule of Available-for-sale investments

	March 31, 2016
			Gross		Gross
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(In thousands)
Short-term investments:
State and municipal obligations	$	1,011	$	-	$	-	$	1,011
Corporate notes		5,680		-		(3)		5,677
Agency bonds		2,001		1		-		2,002
Foreign government obligations		2,695		3		-		2,698
Certificates of deposit		11,750		12		-		11,762
Total short-term investments	$	23,137	$	16	$	(3)	$	23,150
Long-term investments:
Corporate notes	$	558	$	1	$	-	$	559
Certificates of deposit		8,500		24		(1)		8,523
Agency bonds		1,000		4		-		1,004
Foreign government obligations		1,060		1		-		1,061
Total long-term investments	$	11,118	$	30	$	(1)	$	11,147

	March 31, 2015
			Gross		Gross
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(In thousands)
Short-term investments:
State and municipal obligations	$	6,810	$	-	$	-	$	6,810
Corporate notes		7,366		10		-		7,376
Agency bonds		1,006		-		-		1,006
Certificates of deposit		7,000		9		-		7,009
Total short-term investments	$	22,182	$	19	$	-	$	22,201
Long-term investments:
State and municipal obligations	$	1,053	$	4	$	-	$	1,057
Corporate notes		4,232		-		(10)		4,222
Certificates of deposit		9,750		24		(1)		9,773
Agency bonds		4,003		4		(2)		4,005
Other		2,684		-		(1)		2,683
Total long-term investments	$	21,722	$	32	$	(14)	$	21,740

Schedule of Contractual maturities of the available-for-sale non-equity investments

			Fair
	Cost		Value
	(In thousands)
Maturing within one year	$	23,137	$	23,150
Maturing in one to three years		11,118		11,147
Maturing in more than three years		-		-
	$	34,255	$	34,297