Note 2 - Cash, Cash Equivalents and Marketable Investments

6 Months Ended

Jun. 30, 2014

Disclosure Text Block Supplement [Abstract]

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

Note 2. Cash, Cash Equivalents and Marketable Investments

The Company invests its cash primarily in money market funds, commercial paper, corporate notes and bonds, municipal bonds, and debt securities issued by the U.S. government and its agencies. The Company considers all highly liquid investments, with an original maturity of three months or less at the time of purchase, to be cash equivalents. Investments with maturities of greater than three months at the time of purchase are accounted for as “available-for-sale,” are carried at fair value with unrealized gains and losses reported as a component of stockholders’ equity, held for use in current operations and classified in current assets as “marketable investments.”

The following tables summarize the components, and the unrealized gains and losses position, related to the Company’s cash and cash equivalents and marketable investments (in thousands):

June 30, 2014	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Market Value
Cash and cash equivalents:
Cash	$	5,154	$	—	$	—		$	5,154
Money market funds		2,749		—		—			2,749
Commercial paper		2,999		—		—			2,999
Total cash and cash equivalents		10,902		—		—			10,902
Marketable investments:
U.S. government notes		17,109		28		—			17,137
U.S. government agencies		21,040		39		—			21,079
Municipal securities		3,830		5		(3	)		3,832
Commercial paper		9,834		4		—			9,838
Corporate debt securities		18,755		56		(1	)		18,810
Total marketable investments		70,568		132		(4	)		70,696
Total cash, cash equivalents and marketable investments	$	81,470	$	132	$	(4	)	$	81,598

December 31, 2013	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Market Value
Cash and cash equivalents:
Cash	$	3,816	$	—	$	—		$	3,816
Money market funds		9,926		—		—			9,926
Commercial paper		2,500		—		—			2,500
Total cash and cash equivalents		16,242		—		—			16,242
Marketable investments:
U.S. government notes		10,516		11		(5	)		10,522
U.S. government agencies		25,823		38		(3	)		25,858
Municipal securities		2,043		1		(5	)		2,039
Commercial paper		10,239		3		—			10,242
Corporate debt securities		18,109		61		—			18,170
Total marketable investments		66,730		114		(13	)		66,831
Total cash, cash equivalents and marketable investments	$	82,972	$	114	$	(13	)	$	83,073

As of June 30, 2014 and December 31, 2013, the total gross unrealized losses were $4,000 and $13,000, respectively, and were related to interest rate changes on available-for-sale marketable investments. The Company has concluded that it is more-likely-than-not that the securities will be held until maturity or the recovery of their cost basis. No securities were in unrealized loss positions for more than 12 months.

The following table summarizes the contractual maturities of the Company’s available-for-sale securities, classified as marketable investments as of June 30, 2014 (in thousands):

	Amount
Due in less than one year	$	33,828
Due in 1 to 3 years		36,868
	$	70,696