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Fair Value Measurement (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Measurement

Assets measured at fair value by level within fair value hierarchy

		2018			2017			Input Hierarchy Level
		(in thousands)
Cash and cash equivalents:
Bank deposits		$	26,645		$	22,390		Level 1
Gold and silver rounds/bullion			3,664			3,812		Level 1
Accounts receivable:
Receivables from provisional concentrate sales			1,727			2,884		Level 2
		$	32,036		$	29,086

Gains and Losses Related to Changes in Fair Value

		Three months ended June 30,						Six months ended June 30,
		2018			2017			2018			2017			Statement of Operations Classification
		(in thousands)
Realized/unrealized derivative (loss) gain		$	(2,303)		$	(24)		$	(1,732)		$	511		Sales, net
Gold and silver rounds/bullion (loss) gain		$	(160)		$	(148)		$	(144)		$	154		Other expense, net

Realized and Unrealized Gain Losses on Derivatives

		Gold			Silver			Copper			Lead			Zinc			Total
Three months ended June 30, 2018
Realized gain (loss)		$	-		$	-		$	-		$	-		$	-		$	-
Unrealized (loss) gain		$	(38)		$	13		$	(103)		$	(138)		$	(2,037)		$	(2,303)

		Gold			Silver			Copper			Lead			Zinc			Total
Three months ended June 30, 2017
Realized gain (loss)		$	177		$	236		$	23		$	12		$	(220)		$	228
Unrealized (loss) gain		$	(138)		$	(236)		$	(7)		$	2		$	127		$	(252)

		Gold			Silver			Copper			Lead			Zinc			Total
Six months ended June 30, 2018
Realized gain (loss)		$	14		$	(53)		$	53		$	(5)		$	991		$	1,000
Unrealized gain (loss)		$	62		$	162		$	(203)		$	(161)		$	(2,592)		$	(2,732)

		Gold			Silver			Copper			Lead			Zinc			Total
Six months ended June 30, 2017
Realized gain (loss)		$	129		$	190		$	37		$	48		$	(177)		$	227
Unrealized gain (loss)		$	32		$	(9)		$	19		$	60		$	182		$	284

X

- Definition

Tabular disclosure of the amount of gains or losses for the period included in earnings or resulted in a change to net assets, have arisen from the use of significant unobservable inputs (level 3) to measure the fair value of assets, liabilities, and financial instruments classified in shareholders' equity.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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- Definition

Tabular disclosure of the realized and unrealized gains and losses reported in the statement of income which have resulted from the sale and holding of marketable securities, respectively, as well as the sale or disposal of cost method investments. Such amounts would include realized gains and losses on the sale or disposal of trading, available-for-sale, and held-to-maturity securities, unrealized gains and losses on trading securities, unrealized gains and losses on available-for-sale and held-to-maturity securities transferred to the trading securities category, realized gains and losses on the sale or disposal of cost method investments, and losses recognized for other than temporary impairments (OTTI) of such investments.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
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Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References

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-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 1
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