Note 4 - Fair Value Measurements

12 Months Ended

Dec. 31, 2017

. FAIR VALUE MEASUREMENT

The following table details the fair value measurement of the

financial assets (in thousands):

	Fair Value Measurement at December 31, 2017
	Total		Level 1		Level 2		Level 3
Money market funds	$	7,134	$	7,134	$	-	$	-
Corporate debt securities		203,807		-		203,807		-
U.S. treasuries and government agency bonds		13,024		-		13,024		-
Auction-rate securities backed by student-loan notes		5,256		-		-		5,256
Mutual funds under deferred compensation plan		16,625		16,625		-		-
Total	$	245,846	$	23,759	$	216,831	$	5,256

	Fair Value Measurement at December 31, 2016
	Total		Level 1		Level 2		Level 3
Money market funds	$	24,956	$	24,956	$	-	$	-
Corporate debt securities		109,644		-		109,644		-
U.S. treasuries and government agency bonds		45,877		-		45,877		-
Auction-rate securities backed by student-loan notes		5,354		-		-		5,354
Mutual funds under deferred compensation plan		12,108		12,108		-		-
Total	$	197,939	$	37,064	$	155,521	$	5,354

_________________

●	Level 1 —includes instruments with quoted prices in active markets for identical assets.

●

Level

—includes instruments for which the valuations are based upon quoted market prices in active markets involving

similar

assets or inputs other than quoted prices that are observable for the assets. The market inputs used to value these

instruments

generally consist of market yields, recently executed transactions, broker/dealer quotes or alternative pricing sources

with

reasonable levels of price transparency. Pricing sources

may

include industry standard data providers, security master files

from

large financial institutions, and other

third

-party sources used to determine a daily market value.

●	Level 3 —includes instruments for which the valuations are based on inputs that are unobservable and significant to the overall fair value measurement.

The Company

’s level

assets consist of government-backed student loan auction-rate securities, which became illiquid in

2008.

The following table provides a rollforward of the fair value of the auction-rate securities (in thousands):

Balance at January 1, 2016	$	5,361
Change in unrealized loss included in other comprehensive loss		(7	)
Balance at December 31, 2016		5,354
Change in unrealized loss included in other comprehensive income		(98	)
Balance at December 31, 2017	$	5,256

The Company determined the fair value of the auction-rate securities using a discounted cash flow model with the following assumptions:

	December 31,
	2017				2016
Time-to-liquidity (years)		2	-	3			2
Discount rate		4.5%	-	9.6%		4.3%	-	9.3%

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details