Note 9 - Cash, Cash Equivalents and Investments

3 Months Ended

Mar. 31, 2015

Disclosure Text Block Supplement [Abstract]

Cash, Cash Equivalents, and Marketable Securities [Text Block]

9. CASH, CASH EQUIVALENTS AND INVESTMENTS

The following is a summary of the Company’s cash and cash equivalents, short-term and long-term investments (in thousands):

	March 31,		December 31,
	2015		2014
Cash, cash equivalents and investments:
Cash	$	49,001	$	66,188
Money market funds		46,965		60,078
Certificates of deposit		23,050		22,778
U.S. treasuries and government agency bonds		114,741		89,674
Auction-rate securities backed by student-loan notes		5,394		5,389
Total	$	239,151	$	244,107

	March 31,		December 31,
Reported as:	2015		2014
Cash and cash equivalents	$	95,966	$	126,266
Short-term investments		137,791		112,452
Long-term investments		5,394		5,389
Total	$	239,151	$	244,107

The contractual maturities of the Company’s short-term and long-term available-for-sale investments are as follows (in thousands):

	March 31,		December 31,
	2015		2014
Due in less than 1 year	$	98,507	$	91,335
Due in 1 - 5 years		39,284		21,117
Due in greater than 5 years		5,394		5,389
Total	$	143,185	$	117,841

The following tables summarize unrealized gains and losses related to our investments in marketable securities designated as available-for sale (in thousands):

	As of March 31, 2015
	Adjusted Cost		Unrealized Gains		Unrealized Losses			Total Fair Value		Fair Value of Investments in Unrealized Loss Position
Money market funds	$	46,965	$	-	$	-		$	46,965	$	-
Certificates of deposit		23,050		-		-			23,050		-
U.S. treasuries and government agency bonds		114,725		36		(20	)		114,741		34,032
Auction-rate securities backed by student-loan notes		5,570		-		(176	)		5,394		5,394
Total	$	190,310	$	36	$	(196	)	$	190,150	$	39,426

	As of December 31, 2014
	Adjusted Cost		Unrealized Gains		Unrealized Losses			Total Fair Value		Fair Value of Investments in Unrealized Loss Position
Money market funds	$	60,078	$	-	$	-		$	60,078	$	-
Certificates of deposit		22,778		-		-			22,778		-
U.S. treasuries and government agency bonds		89,689		14		(29	)		89,674		35,062
Auction-rate securities backed by student-loan notes		5,570		-		(181	)		5,389		5,389
Total	$	178,115	$	14	$	(210	)	$	177,919	$	40,451