INVESTMENTS (Tables)

9 Months Ended

Dec. 31, 2012

INVESTMENTS [Abstract]

Available-for-sale and held-to-maturity investments

Our investments are classified as either available-for-sale or held-to-maturity.  The following table summarizes available-for-sale and held-to-maturity investments as of December 31, 2012 and March 31, 2012 (in thousands):

	Available-for-Sale Investments
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
December 31, 2012	Cost		Gain		(Loss)			Value
Certificates of deposits	$	996	$	6	$	-		$	1,002
Corporate bonds		6,033		71		-			6,104
Municipal bonds		531		1		-			532
Total available-for-sale investments	$	7,560	$	78	$	-		$	7,638
	Held-to-Maturity Investments
			Gross		Gross
	Amortized		Unrecognized		Unrecognized			Fair
December 31, 2012	Cost		Gain		(Loss)			Value
Certificates of deposits	$	3,590	$	1	$	(1	)	$	3,590
Corporate bonds		19,953		172		(2	)		20,123
Municipal bonds		13,175		38		(20	)		13,193
Total held-to-maturity investments	$	36,718	$	211	$	(23	)	$	36,906

	Available-for-Sale Investments
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
March 31, 2012	Cost		Gain		(Loss)			Value
Certificates of deposits	$	1,245	$	2	$	-		$	1,247
Corporate bonds		6,047		38		-			6,085
Municipal bonds		961		1		-			962
Total available-for-sale investments	$	8,253	$	41	$	-		$	8,294
	Held-to-Maturity Investments
			Gross		Gross
	Amortized		Unrecognized		Unrecognized			Fair
March 31, 2012	Cost		Gain		(Loss)			Value
Certificates of deposits	$	844	$	-	$	-		$	844
Corporate bonds		23,072		131		(31	)		23,172
Municipal bonds		12,921		71		(1	)		12,991
Total held-to-maturity investments	$	36,837	$	202	$	(32	)	$	37,007

Amortized cost and fair value of investments, classified by stated maturity

The following table summarizes the amortized cost and fair value of our investments, classified by stated maturity as of December 31, 2012 and March 31, 2012 (in thousands):

	December 31, 2012				December 31, 2012
	Available-for-Sale Investments				Held-to-Maturity Investments
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in less than one year	$	1,029	$	1,032	$	21,612	$	21,669
Due in 1 to 4 years		6,531		6,606		15,106		15,237
Total investments	$	7,560	$	7,638	$	36,718	$	36,906
	March 31, 2012				March 31, 2012
	Available-for-Sale Investments				Held-to-Maturity Investments
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in less than one year	$	670	$	670	$	21,019	$	21,062
Due in 1 to 4 years		7,583		7,624		15,818		15,945
Total investments	$	8,253	$	8,294	$	36,837	$	37,007