Note 6 - Fair Value Measurements

6 Months Ended

Jun. 30, 2012

Fair Value Disclosures [Text Block]

6.     Fair Value Measurements

Fair value is defined as the price that would be received for selling an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The accounting standard surrounding fair value measurements establishes a fair value hierarchy, consisting of three levels, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.

Financial Assets Measured at Fair Value on a Recurring Basis

The Company utilizes levels 1, 2 and 3 to value its financial assets on a recurring basis. Level 1 instruments use quoted prices in active markets for identical assets or liabilities, which include the Company’s cash accounts, short-term deposits and money market funds as these specific assets are liquid. Level 1 instruments also include United States government securities, government agencies, and states and municipalities, as these securities are backed by the federal or state governments and traded in active markets frequently with sufficient volume. Level 2 instruments are valued using the market approach, which uses quoted prices in markets that are not active or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities and include mortgage-backed securities, corporate obligations and asset-backed securities as similar or identical instruments can be found in active markets. Level 3 is supported by little or no market activity and requires a high level of judgment to determine fair value, which includes the Company’s two venture fund investments. The Company periodically monitors its two venture capital funds and records these investments within “Other long-term assets” on the Condensed Balance Sheets based on quarterly statements the Company receives from each of the funds. The statements are generally received one quarter in arrears, as more timely valuations are not practical. The statements reflect the net asset value, which the Company uses to determine the fair value for these investments, which (a) do not have a readily determinable fair value and (b) either have the attributes of an investment company or prepare their financial statements consistent with the measurement principles of an investment company. The assumptions used by the Company, due to lack of observable inputs, may impact the fair value of these equity investments in future periods. There were no changes in the fair value estimates from December 31, 2011. In the event that the carrying value of its equity investments exceeds their fair value, or the decline in value is determined to be other-than-temporary, the carrying value is reduced to its current fair value, which is recorded in “Interest and other income, net,” in the Condensed Statements of Income. At June 30, 2012, there were no significant transfers that occurred between any of the levels of the Company’s financial assets.

A summary of financial assets measured at fair value on a recurring basis at June 30, 2012 was as follows:

	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(in thousands)
Cash, including short-term deposits1	$	53,888	$	53,888	$	-	$	-
Mutual funds2		10,135		10,135		-		-
United States government securities2		118,040		118,040		-		-
Government agencies2		2,504		2,504		-		-
Corporate securities2		4,555		4,555		-		-
Commercial paper3		35,826		-		35,826		-
Corporate oligations4		33,838		-		33,838		-
Non-controlling interests in certain funds5		1,117		-				1,117
	$	259,903	$	189,122	$	69,664	$	1,117

(1) At June 30, 2012, the Company recorded $54.1 million and $0.1 million within “Cash and cash equivalents” and “Marketable securities,” respectively.

(2) Recorded within “Marketable securities.”

(3) At June 30, 2012, the Company recorded $14.8 million and $21.0 million within “Cash and cash equivalents” and “Marketable securities,” respectively.

(4) At June 30, 2012, the Company recorded $2.0 million and $31.8 million within “Cash and cash equivalents” and “Marketable securities,” respectively.

(5) Recorded within “Other long-term assets.”

A summary of financial assets measured at fair value on a recurring basis at December 31, 2011 was as follows:

	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(in thousands)
Cash, including short-term deposits1	$	8,601	$	8,601	$	-	$	-
United States government securities2		309,780		309,780		-		-
Government agencies2		3,526		3,526		-		-
Corporate oligations2		1,521		-		1,521		-
Non-controlling interests in certain funds3		1,117		-		-		1,117
Total	$	324,545	$	321,907	$	1,521	$	1,117

(1) At December 31 2011, the Company recorded $8.5 million and $0.1 million within “Cash and cash equivalents” and “Marketable securities,” respectively.

(2) Recorded within “Marketable securities.”

(3) Recorded within “Other long-term assets.”

The Company’s other financial instruments include accounts payable and accrued and other liabilities. Carrying values of these financial liabilities approximate their fair values due to the relatively short maturity of these items. The related cost basis for the Company’s 3/4% Convertible Senior Notes due December 22, 2023 (the “3/4% Notes”) at June 30, 2012 and December 31, 2011 was approximately $0.3 million on both dates. Although the remaining balance of its 3/4% Notes is relatively small and the market trading is very limited, the Company expects the cost basis for the 3/4% Notes of approximately $0.3 million at June 30, 2012 to approximate fair value. The Company’s convertible debt is recorded at its carrying value, not the estimated fair value. The Company may seek to make open market repurchases of the remaining balance of its 3/4% Notes within the next twelve months. Accordingly, these notes are reflected as a current liability in the accompanying Condensed Balance Sheets.

Non-Financial Assets Measured at Fair Value on a Non-Recurring Basis

The Company had no non-financial assets measured at fair value on a non-recurring basis as of June 30, 2012 and December 31, 2011.