NOTE 3.

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, 2011 and March 31, 2011 (in thousands):

	Available-for-Sale Investments
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
December 31, 2011	Cost		Gain		(Loss)			Value
Certificates of deposits	$	1,245	$	-	$	(2	)	$	1,243
Corporate bonds		6,052		5		(15	)		6,042
Municipal bonds		971		-		(5	)		966
Total available-for-sale investments	$	8,268	$	5	$	(22	)	$	8,251

	Held-to-Maturity Investments
			Gross		Gross
	Amortized		Unrecognized		Unrecognized			Fair
December 31, 2011	Cost		Gain		(Loss)			Value
Certificates of deposits	$	2,591	$	-	$	-		$	2,591
Corporate bonds		25,231		113		(356	)		24,988
Municipal bonds		13,482		77		(1	)		13,558
U.S. agency securities		3,000		1		-			3,001
Total held-to-maturity investments	$	44,304	$	191	$	(357	)	$	44,138

	Held-to-Maturity Investments
			Gross		Gross
	Amortized		Unrecognized		Unrecognized			Fair
March 31, 2011	Cost		Gain		(Loss)			Value
Certificates of deposits	$	12,084	$	2	$	-		$	12,086
Commercial paper		1,997		-		-			1,997
Corporate bonds		23,534		74		(110	)		23,498
Municipal bonds		11,603		31		(5	)		11,629
U.S. agency securities		13,000		7		(73	)		12,934
Total held-to-maturity investments	$	62,218	$	114	$	(188	)	$	62,144

The amortized cost of our held-to-maturity investments approximates their fair value. As of December 31, 2011 and March 31, 2011, we did not have other-than-temporary impairment in the fair value of any individual security classified as held-to-maturity or available-for-sale. As of December 31, 2011 and March 31, 2011, we had unrealized loss on available-for-sale investments, net of related income taxes of $14,000 and $0, respectively. Redemptions of investments in accordance with the callable provisions during the three months ended December 31, 2011 and 2010, were $250,000 and $5.5 million, respectively, and during the nine months ended December 31, 2011 and 2010, were $13.3 million and $36.1 million, respectively.

The following table summarizes the amortized cost and fair value of our investments, classified by stated maturity as of December 31, 2011 and March 31, 2011 (in thousands):

	December 31, 2011				December 31, 2011
	Available-for-Sale Investments				Held-to-Maturity Investments
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in less than one year	$	675	$	674	$	21,692	$	21,648
Due in 1 to 4 years		7,593		7,577		22,612		22,490
Total investments	$	8,268	$	8,251	$	44,304	$	44,138

	March 31, 2011
	Held-to-Maturity Investments
	Amortized Cost		Fair Value
Due in less than one year	$	25,981	$	25,988
Due in 1 to 4 years		36,237		36,156
Total investments	$	62,218	$	62,144