FAIR VALUE MEASUREMENTS

6 Months Ended

Jun. 30, 2018

10. FAIR VALUE MEASUREMENTS

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at a given measurement date. Valuation techniques used must maximize the use of observable inputs and minimize the use of unobservable inputs. The fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy, as defined below, gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs.


•	Level 1, defined as observable inputs such as quoted prices in active markets for identical assets. Level 1 assets include available-for-sale debt securities generally valued based on independent third-party market prices.


•	Level 2, defined as observable inputs other than Level 1 prices. These include quoted prices for similar assets or liabilities in an active market, quoted prices for identical assets and liabilities 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.


•	Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.

The book values of cash and cash equivalents, receivables and accounts payable reflected in the Consolidated Balance Sheets (unaudited) approximate the fair value of these instruments due to the short duration to their maturities.

See Note 5 - Restricted Investments, Reclamation Deposits And Bond Collateral and Note 9 - Derivative Instruments for further disclosures related to the Company's fair value estimates.

The table below sets forth, by level, the Company’s financial assets and liabilities that are accounted for at fair value on a recurring basis:



	June 30, 2018
			Quoted Prices in Active Markets for Identical Assets or Liabilities		Significant Other Observable Inputs
	Fair Value		Level 1		Level 2
	(In thousands)
Assets:
Available-for-sale debt securities, included in Restricted investments, reclamation deposits and bond collateral	$	145,655	$	145,655	$	—
	$	145,655	$	145,655	$	—



	December 31, 2017
			Quoted Prices in Active Markets for Identical Assets or Liabilities		Significant Other Observable Inputs
	Fair Value		Level 1		Level 2
	(In thousands)
Assets:
Available-for-sale debt securities, included in Restricted investments, reclamation deposits and bond collateral	$	148,535	$	148,535	$	—
	$	148,535	$	148,535	$	—
Liabilities:
Warrants issued by WMLP, included in Other liabilities	$	296	$	—	$	296
	$	296	$	—	$	296

Long-term debt fair value estimates are based on observed prices for securities with an active trading market when available (Level 2) and otherwise using discount rate estimates based on interest rates (Level 3). As of June 30, 2018, the Company valued the Bridge Loan and WMLP Term Loan with Level 3 fair values. As of December 31, 2017, the Company valued the WMLP Term Loan and the San Juan Loan with Level 3 fair values. The estimated fair values of the Company’s debt with fixed and variable interest rates are as follows:



	Fixed Interest Rate				Variable Interest Rate
	Carrying Value		Fair Value		Carrying Value		Fair Value
	(In thousands)
June 30, 2018	$	375,950	$	108,523	$	710,999	$	232,139
December 31, 2017	375,789		195,189		672,618		351,856

- 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.

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