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Note 11 - Fair Value Measurements

6 Months Ended

Jun. 30, 2019

Notes to Financial Statements

Fair Value Disclosures [Text Block]

11. FAIR VALUE MEASUREMENTS

The following tables summarize the fair value measurement of the financial assets (in thousands):

		Fair Value Measurement at June 30, 2019
		Total				Level 1				Level 2				Level 3
Money market funds		$	41,820			$	41,820			$	-			$	-
Corporate debt securities			135,548				-				135,548				-
U.S. treasuries and government agency bonds			32,311				-				32,311				-
Certificates of deposit			1,600				-				1,600				-
Auction-rate securities backed by student-loan notes			3,215				-				-				3,215
Mutual funds and money market funds under deferred compensation plan			21,317				21,317				-				-
Total		$	235,811			$	63,137			$	169,459			$	3,215

		Fair Value Measurement at December 31, 2018
		Total				Level 1				Level 2				Level 3
Money market funds		$	41,135			$	41,135			$	-			$	-
Corporate debt securities			170,909				-				170,909				-
U.S. treasuries and government agency bonds			32,068				-				32,068				-
Certificates of deposit			1,600				-				1,600				-
Auction-rate securities backed by student-loan notes			3,241				-				-				3,241
Mutual funds and money market funds under deferred compensation plan			18,867				18,867				-				-
Total		$	267,820			$	60,002			$	204,577			$	3,241

●	Level 1—includes instruments with quoted prices in active markets for identical assets.
●	Level 2—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 3 assets consist of government-backed student loan auction-rate securities. The following table provides a rollforward of the fair value of the auction-rate securities (in thousands):

Balance at January 1, 2019		$	3,241
Change in unrealized gain included in other comprehensive income			49
Sale and settlement at par			(75	)
Balance at June 30, 2019		$	3,215

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

		June 30,					December 31,
		2019					2018
Time-to-liquidity (in years)		2	-	3			2	-	3
Discount rate		4.1%	-	9.4%			4.9%	-	10.1%

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.

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