CASH, CASH EQUIVALENTS, AND INVESTMENTS

The following table represents the Company’s cash, cash equivalents, and investments as of December 31, 2013 and March 31, 2013:



(in thousands)	December 31, 2013									March 31, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Cash and cash equivalents:
Cash	$	225,310	$	—	$	—		$	225,310	$	118,881	$	—	$	—		$	118,881
Cash equivalents	10,223		1		—			10,224		109,895		—		—			109,895
Total cash and cash equivalents	$	235,533	$	1	$	—		$	235,534	$	228,776	$	—	$	—		$	228,776

Short-term investments (due in 1 year or less):
U.S. Treasury Bills and Government Agency Securities	$	19,227	$	6	$	(1	)	$	19,232	$	66,092	$	18	$	(3	)	$	66,107
Commercial paper	43,792		13		—			43,805		15,670		9		—			15,679
Corporate bonds	22,353		6		(2		)	22,357		34,766		31		(2		)	34,795
Certificates of deposit ("CDs")	1,002		1		—			1,003		—		—		—			—
Total short-term investments	$	86,374	$	26	$	(3	)	$	86,397	$	116,528	$	58	$	(5	)	$	116,581

Long-term investments (due in 1 to 3 years):
U.S. Treasury Bills and Government Agency Securities	$	36,929	$	23	$	(14	)	$	36,938	$	55,317	$	42	$	(1	)	$	55,358
Corporate bonds	69,772		116		(26		)	69,862		23,878		23		(3		)	23,898
CDs	—		—		—			—		1,002		3		—			1,005
Total long-term investments	$	106,701	$	139	$	(40	)	$	106,800	$	80,197	$	68	$	(4	)	$	80,261

Total cash, cash equivalents and investments	$	428,608	$	166	$	(43	)	$	428,731	$	425,501	$	126	$	(9	)	$	425,618

As of December 31, 2013 and March 31, 2013, all of the Company’s investments are classified as available-for-sale securities. The carrying value of available-for-sale securities included in cash equivalents approximates fair value because of the short maturity of those instruments.

The Company did not incur any material realized or unrealized net gains or losses in the three and nine months ended December 31, 2013 and 2012.